| 单词 | embryology |
| 例句 | Scientists studying living organisms were far more preoccupied with other matters: embryology, cell biology, the origin of species, and evolution. The Gene 2016-06-02T00:00:00Z Ironically, even though embryology had launched the discipline of modern genetics, the reconciliation between genes and genesis would be a vastly more engaging scientific problem. The Gene 2016-06-02T00:00:00Z He studied eggs and was a pioneer of chemical embryology. Weird science 2015-07-02T04:00:00Z Broun recently called embryology, evolution and the big bang theory "lies straight from the pit of hell". An American studies professor's view on The Campaign 2012-10-29T17:39:34Z Centuries of embryology and morphology laid the groundwork for the discipline of developmental biology. Small Collections of Cells Determine How a Body Takes Its Shape 2023-11-09T05:00:00Z To detect whether these shapes came from an ancestral bat wing or evolved independently, Sears and her colleagues investigated the embryology of different bat species and the genes responsible for the tissue's development. Mutated Gene That Causes Webbed Limbs in Humans May Have Given Bats Wings 2023-10-01T04:00:00Z These developments, as well as the results from embryology and paleontology, were synthesized in Charles Darwin’s theory of evolution by natural selection. Fundamentals of Biology 2015-01-01T00:00:00Z Elliot is an impulsive, hair-down type, who is more excited about pushing scientific and ethical boundaries with a cutting-edge embryology lab than about providing compassionate care. 'Dead Ringers' takes an unflinching look at reproductive healthcare in America 2023-04-22T04:00:00Z He says his years studying embryology left him with the belief that life begins at fertilisation. Abortion may be legal in Argentina but women still face major obstacles 2023-03-04T05:00:00Z It also has multiple teams working in parallel on problems of computational biology, cellular engineering, stem cell reprogramming, embryology, protein engineering and animal husbandry, among other focuses. A 'De-Extinction' Company Wants to Bring Back the Dodo 2023-01-31T05:00:00Z Looking for a solution to this problem, Cajal turned to embryology—also known as ontogeny—which he had first read about in a college textbook. The Father of Modern Neuroscience Discovered the Basic Unit of the Nervous System 2022-04-09T04:00:00Z Nipam Patel, an evolutionary and developmental biologist at the Marine Biology Laboratory, first investigated the wings of several such species with his students in an embryology class. See through the Glasswing Butterfly’s Fascinating Wings 2021-11-01T04:00:00Z “I am very, very concerned” about the cultural change at Carnegie and the reorganization, says Yixian Zheng, the director of Carnegie’s embryology department. Uproar over sale of iconic Carnegie Institution headquarters to Qatar exposes deeper tensions 2021-04-16T04:00:00Z In the more than 160 years since Darwin advanced his revolutionary idea, evolutionary biologists have marshaled evidence from paleontology, genetics and embryology that has proved him right. How a 380-Million-Year-Old Fish Gave Us Fingers 2020-06-17T04:00:00Z Researchers attending the MBL embryology course spend six weeks in Woods Hole. Biologist exits prestigious post years after violating sexual harassment policy 2020-02-23T05:00:00Z As embryology textbooks tell us, the child who lives inside the woman is as much a human as the mother herself. Opinion | Why those who oppose abortion continue to fight 2020-01-24T05:00:00Z Daniel Brison, a professor of clinical embryology at the University of Manchester, said the study was an important proof of concept, but that questions remain. Birth of monkey could help ensure boys with cancer can have families 2019-03-22T04:00:00Z Robin Lovell-Badge, a professor of genetics and embryology at the Francis Crick Institute in London who moderated the session, asked a question that he said was on many attendees’ minds. Chinese Scientist Who Says He Edited Babies’ Genes Defends His Work 2018-11-28T05:00:00Z Professor Joyce Harper, professor in genetics and human embryology at London’s UCL, said: “Today’s report of genome editing human embryos for resistance to HIV is premature, dangerous and irresponsible.” China orders inquiry into 'world's first gene-edited babies' 2018-11-26T05:00:00Z Darwin developed his ideas on sexual selection while immersed in fields as diverse as embryology and pigeon breeding. Summer reads: Darwin’s dilemma on sexual selection, ecology versus empire, and the dark side of the greater good 2018-07-17T04:00:00Z In the 1980s, the male referee of an article on chick embryology by two female authors criticized the paper’s tone as “too enthusiastic”. How female fellows fared at the Royal Society 2018-03-05T05:00:00Z Daniel Brison, honorary professor of clinical embryology and stem cell biology at the University of Manchester, said the study was "exciting looking" in a much needed area. Test could indicate risk of miscarriage 2017-11-01T04:00:00Z In 1973, t he court decreed — without basis in the Constitution’s text, structure or history, or in embryology or other science — a trimester policy. Opinion | Democrats are the real abortion extremists 2017-10-18T04:00:00Z The exhibition showcases images scientists generate during their usual course of research in fields from embryology to plasma physics. Is It Art or Is It Science? 2017-07-27T04:00:00Z Daniel Brison, a specialist in embryology and stem cell biology at Britain's Manchester University, said the findings had "major implications not just for fertility but for male health and wider public health". Sperm Count Dropping in Western World 2017-07-26T04:00:00Z “It is important to understand normal human embryology to clarify how inborn defects and congenital malformations occur,” said de Bakker. 3D embryo atlas reveals human development in unprecedented detail 2016-11-24T05:00:00Z At the world-famous Marine Biological Laboratory there, students in its annual embryology course dissect sea urchins and comb jellies, and graft cells together from different animals. CRISPR's hopeful monsters: gene-editing storms evo-devo labs 2016-08-16T04:00:00Z The decision made Britain one of the first countries in the world to grant this type of authorisation on one of science’s new frontiers and follows months of deliberation by the country’s embryology regulator. Netherlands gives green light for growing human embryos 2016-05-27T04:00:00Z Whereas Niakan's work is answering questions intrinsic to embryology, Fan's work is establishing proof of principle for what would need to be done to generate an individual with resistance to HIV, Daley adds. Second Chinese team reports gene editing in human embryos 2016-04-07T04:00:00Z This species is widely employed in the study of embryology, and is thus well understood. Rainbow’s beginning 2016-03-23T04:00:00Z But, Zernicka-Goetz added, the project was a dramatic reminder of how little is known about human embryology. 3D embryo atlas reveals human development in unprecedented detail 2016-11-24T05:00:00Z Not only did he know the editors well; he also had an instinct for how to frame the findings in the larger conversation about stem cells, embryology, and cell fate. The Stem-Cell Scandal 2016-02-29T05:00:00Z They may now be able to seize the lead in exploring the early stages of human embryology. British Researcher Gets Permission to Edit Genes of Human Embryos 2016-02-01T05:00:00Z Oocyte culture: Eggs are cultured in a petri dish at an embryology lab. For some women, egg freezing is the new happy-hour topic 2015-08-22T04:00:00Z Can we apply robotics to embryology procedures and standardize the skill of the most adept embryologist? IVF In The Age Of Precision Medicine: 5 First Steps 2015-05-18T04:00:00Z Mediocre anonymous donor pregnancy rates are a good marker for basic competency of the embryology lab – even for non-donor cycles. Free IVF Advice: Recollections From The Heart And Mind Of An RE 2015-04-19T04:00:00Z He had a genius for distilling penetrating insights about evolutionary processes — often after amassing years of observational and experimental data — and he drew on such disparate topics as agriculture, geology, embryology and behaviour. Does evolutionary theory need a rethink? 2014-10-07T04:00:00Z In higher grades, the focus shifts to embryology. EXCHANGE: Wide-eyed students watch chicks hatching 2014-05-28T04:00:00Z Representative Broun called evolution, embryology and the Big Bang theory “lies straight from the pit of hell.” Is There a Doctor in the House? Yes, 17. And 3 in the Senate. 2014-03-07T21:00:17Z The challenge requires collaborative expertise in stem cell biology, embryology, and fundamental neuroscience. [Review] Development-Inspired Reprogramming of the Mammalian Central Nervous System 2014-01-30T19:25:54.261Z “Evidence for evolution is everywhere – biogeography, embryology, anatomy, paleontology, and so on,” he said. Evolution Basics For People Who Hate It 2013-12-31T19:24:00Z In embryology and the development of the fetus, those kinds of connections aren’t present, aren’t finished, until around 26 weeks from the last menstrual period. New York Times legitimizes anti-choice propaganda 2013-09-17T16:52:00Z Mr. Broun, a family doctor from North Georgia, recently proclaimed his medical school training on evolution, embryology and the Big Bang theory to be “lies straight from the pit of hell.” Democrats Go for a Senate Gain as G.O.P. Rivals Vie in Georgia 2013-09-01T00:59:44Z Subjects include anatomy, physiology, pathology, biochemistry, pharmacology, microbiology, immunology, embryology, and others. From classrooms to hospitals: when medicine doesn t have all the answers 2013-05-07T00:15:00.603Z Last September, Congressman Paul Broun of Georgia asserted that that evolution, embryology and the big bang theory were lies straight from the pit of hell. Facebook's Mark Zuckerberg Enters The Political Arena, Here's What He Should Focus On 2013-03-25T13:38:20Z All that stuff I was taught about evolution and embryology and big bang theory, all that is lies straight from the pit of hell. A Silent Goat Outwits a Talking MD 2012-12-05T15:17:37.553Z All that stuff I was taught about evolution and embryology and the Big Bang Theory, all that is lies straight from the pit of Hell. Paul Broun may get a write-in challenger: Charles Darwin 2012-10-17T21:23:00Z A highly simplified version of the tetrapod family tree as consistently recovered by morphological and molecular studies, and also supported by embryology, biochemistry, behaviour and other lines of evidence. Why the world has to ignore ReptileEvolution.com 2012-07-04T11:45:05.397Z This duality of the body and singleness of the mature germ is one of the most striking facts that come to light in embryology. Being Well-Born An Introduction to Eugenics 2012-05-22T15:16:53.140Z In relation to human embryology the smooth sinus venosus and reticulated auricle are interesting. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z It must be admitted that some or the later work on insect embryology has justified the growing scepticism in the universal applicability of the “germ-layer theory.” Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z But if we are to admit the human point of view, a glance at the facts of embryology must produce very uncomfortable reflexions. Theological Essays 2012-03-27T02:00:21.867Z He soon turned his attention to the embryology of Bryophytes and Pteridophytes, and gave continuous accounts of the germination of the spores and fertilization in Pilularia, Salvinia, Selaginella. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 5 "Hinduism" to "Home, Earls of" 2012-03-25T02:00:05.717Z Such a victory over palpable reality has no doubt its origin—its embryology—in phases of mind which have been already discussed in the first section. Hegel's Philosophy of Mind 2012-03-07T03:00:14.327Z The cell theory was advanced, and embryology was studied; the microscope discovered germs of disease and taught us how to stay the plague. The Works of Robert G. Ingersoll, Vol. 4 (of 12) Dresden Edition?Lectures 2012-02-11T03:03:46.253Z Nevertheless he was led to believe in evolution, apart from any possible motive-cause, by “general facts in the affinities, embryology, rudimentary organs, geological history, and geographical distribution of organic beings.” Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 9 "Dagupan" to "David" 2012-02-11T03:03:39.807Z The evidence of embryology is decidedly against the view that the eye-stalks are limbs. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z He practically founded the modern science of embryology. Charles Darwin: His Life in an Autobiographical Chapter, and in a Selected Series of His Published Letters 2012-01-22T03:00:19.733Z "We know so little about the early embryology of our cells," Behringer said. Baby Monkeys With 6 Genomes Are Scientific First 2012-01-07T00:15:00.240Z Again in Aphis, the embryology of which has been so well worked out by Huxley,18 the case is very similar, although the legs are somewhat later in making their appearance. On the Origin and Metamorphoses of Insects 2011-12-05T03:00:46.667Z They are an excessively learned, a monumental, an epoch-making work, the fruit of vast and heroic labors, with colored plates on stone, showing the turtles of the United States, and their embryology. Atlantic Classics 2011-10-16T02:00:18.497Z They are of interest, however, rather from the point of view of general embryology than from that of 559 the special student of the Crustacea, and cannot be fully dealt with here. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z It should be sufficiently obvious to any earnest thinker that the problems which are involved in the study of embryology are precisely those which are of the very greatest importance to humanity at large. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z To others all is as plain as possible; embryology supplies a convincing proof of the accuracy of an evolution theory; but these are scientific theorists who see by imagination, and are impatient of uncertainty. The Relations of Science and Religion The Morse Lecture, 1880 2011-09-11T02:00:11.613Z Comparative embryology shows that, however varied the forms and functions of the numerous animal organs may be, the method of their development is remarkably similar. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z The embryology of her eggs was of small concern to her; her contribution to the Natural History of the United States could wait. Atlantic Classics 2011-10-16T02:00:18.497Z If embryology is any guide to the past, nothing is more certain than that the ancient progenitors of Man once lived an aquatic life. McClure's Magazine, Vol. 1, No. 1 2011-07-17T02:00:36.813Z The importance of thoroughly realising these simple facts of embryology should at this stage be obvious. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z Besides, with the advance of our knowledge of embryology we are getting to know more and more about these difficult problems and many things that were mysteries before are now clear. Psychotherapy 2011-06-19T02:00:20.053Z Dr. Oscar Hertwig is a scientific naturalist of the very first rank, and his name is peculiarly associated with many of the most important advances in our knowledge of cells and of embryology. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z The explanation of these morbid manifestations lies in the very foundations of embryology. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z Aristotle and Galen made some observations on the subject, as regards animals, while Harvey and his successors considerably advanced our knowledge, but as a distinct and important subject embryology only dates from the nineteenth century. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z Evidently then this ectoderm or outer layer is of the very greatest importance in embryology, since from it arise all those parts of the embryo itself which are the most important in its future life. Embryology The Beginnings of Life 2011-09-12T02:00:28.483Z The conjunction of pre-human braincase with human thighbone appeared to favour the popular view that the erect attitude was the earlier, but the evidence of embryology suggests a reverse order. Man, Past and Present 2011-03-28T02:00:29.283Z As many are interested in the problems who have little acquaintance with the technical facts of embryology, a simple account of the early stages in the development of an animal may be useful for reference. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z The relations of face to cranium in embryology have already been described. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z As the whole story is given at length in the chapter on the embryology of the Echinoderms, we need only allude to it here in general terms. Seaside Studies in Natural History Marine Animals of Massachusetts Bay. Radiates. 2011-03-07T03:00:13.343Z He did not confine himself in his studies, however, to the physiology and pathology, nor even to the anatomy and embryology of man. Makers of Modern Medicine 2011-03-05T03:00:29.580Z The embryology of insects is entirely a study of the last century. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z If the enunciation of the cell-theory may be said to have marked a first from a second period in the history of embryology, the publication of Darwin’s great idea ushered in a third. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z To appreciate the degeneracy observed in the ear its embryology requires study. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z The evidence for the Pelmatozoic theory is supplied by palaeontology, embryology, the comparative anatomy of the classes, and a consideration of other phyla. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10 "Echinoderma" to "Edward" 2011-01-19T03:00:19.027Z It thus appears, if we may rely on embryology, which has always proved the safest guide in classification, that we have at last gained a clue to the source whence the Vertebrata have 206been derived. The Descent of Man and Selection in Relation to Sex, Vol. I 2011-01-17T03:00:49.523Z Unfortunately it is on that weakest of the three foundation pillars of descent, namely the science of embryology with its M�llerian-Haeckelian capitulation theory or biogenetic law, that the child-study pedagogues have builded. Education: How Old The New 2011-01-14T03:00:54.370Z The influence of Balfour’s work on embryology was immense and is still felt. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z With the increase in the size of the brain in evolution and in human embryology, this cartilaginous primary skull became insufficient to roof over the brain, and thus resulted gaps in it. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z Then I wrote about embryology of fishes because I knew nothing about it and reasoned that ninety-nine men in a hundred would be in the same boat. The Man from Archangel and Other Tales of Adventure 2011-01-01T03:00:24.903Z Of its embryology and comparative anatomy little is known, though J.W. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Among the most startling disclosures of embryology are those which relate to this subject. Through Nature to God 2010-12-24T03:00:36.410Z But this is not the case; embryology includes not only a study of embryos as just defined, but also a study of larvae. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z A government body charged with deciding ethical niceties over the range of embryology research and practice ended by creating its own moral nonsense. In the name of purity, public funds are wasted on the rich 2010-08-24T19:00:00Z A great point of interest therefore exists in the knowledge of the structure and embryology of tracheae in the different groups. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" For information as to the embryology of scorpions, the reader is referred to the works named in the bibliography below. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" Attentive study of embryology shows us, in fact, that embryos have their own conditions suitable to themselves, very different from those of adults. The Old Riddle and the Newest Answer As long as embryology confines its attention to embryos, it is easy to fix its limits, at any rate in the higher animals. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z The study of embryology breaks down the time-honored branch lines of vertebrates, articulates, mollusks, and radiates. The Arena Volume 18, No. 93, August, 1897 Neither embryology nor palaeontology assists us in this direction. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 6 "Armour Plates" to "Arundel, Earls of" This last furnishes the only true analogy possible between embryology and geological succession. The Origin of the World According to Revelation and Science But it must, moreover, be noted that the story which embryology can be made to tell is by no means so plain as we might easily be led to suppose. The Old Riddle and the Newest Answer His work is in fact a system of comparative embryology, replete with new discoveries in almost every part. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Wishing to base his doctrine on a sound foundation, Lombroso begins with what may be termed the embryology of crime. A Problem in Modern Ethics being an inquiry into the phenomenon of sexual inversion, addressed especially to Medical Psychologists and Jurists Before long, comparative embryology arose and it was seen that the embryo passes through certain stages of development which roughly indicate the past life of the organism. The Next Step in Religion An Essay toward the Coming Renaissance The same holds true of the facts of comparative anatomy, embryology, and so on. Naturalism And Religion So again, speaking of a certain conclusion of Professor Haeckel's concerning the embryology of lemurs, which MM. The Old Riddle and the Newest Answer Mesenchyme is the tissue which in Vertebrate embryology has frequently been called embryonic connective tissue. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z At this point these books should be supplemented by a brief survey of the essential structure, physiology, and embryology of human reproduction. Sex-education A series of lectures concerning knowledge of sex in its relation to human life She'd never, I'm persuaded, heard of embryology, and in these days—what can be done without that?' Fathers and Children For this “unfortunate and unsupported assumption” there are no proofs in embryology, palæontology, or anatomy. Naturalism And Religion So again as to the phenomena of embryology. The Old Riddle and the Newest Answer It might be attempted to meet this difficulty by limiting embryology to a study of all those changes which occur in the organism before the attainment of the adult state. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z It reached its climax in the writings of Haeckel, and I think I may add without exaggeration that for twenty-five years it furnished the chief inspiration of the school of descriptive embryology. A Critique of the Theory of Evolution Of such material facts are the discoveries in embryology and kindred branches. Woman under socialism It was perfected from time to time, as new data came to hand, through studies of paleontology, of embryology, and of comparative anatomy. A History of Science, Volume 5(of 5) Aspects Of Recent Science And Prof. Frank R. Lillie, department of embryology, University of Chicago, says: I feel pretty impatient over the statements of certain religious teachers that evolution has collapsed. The Church, the Schools and Evolution We must now pass to the consideration of another supposed law of embryology—the so-called law of v. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z Accepting this view, let us ask, does the evidence from embryology favor the theory of evolution? A Critique of the Theory of Evolution During this time, English investigators contributed much, some of ephemeral, some of lasting importance to the development of embryology. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 We are not concerned here with embryology, and will content ourselves with some of the main points. The Sexual Question A Scientific, psychological, hygienic and sociological study Thus, by reducing the penal problem to its simplest expression, its solution was rendered easier, just as the study of embryology has in a great measure solved the apparently strange and mysterious riddle of teratology. Criminal Man According to the Classification of Cesare Lombroso In its scientific and systematic form embryology may be considered as having only taken birth within the last century, although the germ from which it sprung was already formed nearly half a century earlier. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z A prodigious quantity of facts, of comparative anatomy and of embryology, inexplicable without it, emerge from the chaos and constitute a whole, truly and marvellously homogeneous. The Industries of Animals During the latter part of the sixteenth century, the study of embryology was, for obvious reasons, most often considered within the province of anatomy and obstetrics. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 This is the object of the science of embryology. The Sexual Question A Scientific, psychological, hygienic and sociological study Whether we study his anatomy, his embryology, his history, his language, or his civilization, all indications point in the same direction. The Meaning of Evolution It might thus be concluded that embryology would exclude the study of larvae, in which the whole or the greater part of the development takes place outside the parent and outside the egg. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z These facts, simple as they appear, throw light on the characters which distinguish the larval and adult states of natural species, and on the whole great subject of embryology. The Variation of Animals and Plants Under Domestication, Volume II (of 2) To affirm that Sir Thomas Browne was the founder of chemical embryology or, indeed, to contend that he made a great impress upon the progress of embryology is to humour our fancy. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 Among the additions may be mentioned a fuller treatment of the argument from embryology, which was made stronger by later investigations. Life of Charles Darwin This edition represents all the advances recently made in the science of embryology. The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged. The science of embryology, then, is the science of individual development, and includes within its purview all those changes of form and structure, whether embryonic, larval or post-larval, which characterize the life of the individual. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" 2011-02-06T03:00:53.093Z We can thus understand why embryology should throw a flood of light on the natural system of classification, for this ought to be as far as possible genealogical. The Variation of Animals and Plants Under Domestication, Volume II (of 2) If Harvey made no contribution beyond emphasizing the origin of animals from eggs, he would deserve a prominent place in the history of embryology. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 Whereas the greatest expert in literary embryology may read Gorboduc and The Misfortunes of Arthur through without discerning the slightest signs of what was coming. A History of Elizabethan Literature A little embryology will give a new impetus to our studies, whether we watch the unfolding leaves of a sunflower, a caterpillar emerging from its egg, or a chick breaking through its shell. The Log of the Sun A Chronicle of Nature's Year The actual data of embryology would also remain. Creative Evolution These foetal specimens, however, let it be remembered, are of the greatest consequence in the study of embryology, and should always be preserved intact in a fluid medium of some kind. Practical Taxidermy A manual of instruction to the amateur in collecting, preserving, and setting up natural history specimens of all kinds. To which is added a chapter upon the pictorial arrangement of museums. With additional instructions in modelling and artistic taxidermy. Boyle, unlike Browne, exposed embryos of different ages to the action of "Spirit of Wine" or "Sal Armoniack," demonstrating thereby the chemical fixation of embryos as an aid to embryology. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 The study of embryology has lately shown us clearly how the clothing of our Physical Ego has been formed, during the past millions of years, from the lowest forms of life. Science and the Infinite or Through a Window in the Blank Wall Aristotle provided a good foundation for embryology, and made some interesting discoveries, but no progress was made in the science for 2,000 years after him. The World's Greatest Books — Volume 15 — Science Comparative anatomy and embryology combine to testify that this organ had its origin in modifications of the endings of the ordinary nerves of the skin. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions A dense fog obscured all minds, and the dazzling truth could not pierce it; thus all progress in embryology was precluded. Spontaneous Activity in Education Various English embryologists had varying success with developmental theory, but as a group they had made great impact upon the development of embryology. Medical Investigation in Seventeenth Century England Papers Read at a Clark Library Seminar, October 14, 1967 This comparison I have been able to make from a study of the embryology of Isotoma. Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses Then the Reformation brought some liberty of research, and in the seventeenth century several works were written on embryology. The World's Greatest Books — Volume 15 — Science The argument from embryology must be taken to begin with the first beginning of individual life in the ovum. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Then the scientific world perceived the truth and accepted the evidence, inaugurating those studies in embryology which shed so much luster on the nineteenth century. Spontaneous Activity in Education In fact, according to modern embryology, not a drop of blood passes from either parent to the offspring. Folkways A Study of the Sociological Importance of Usages, Manners, Customs, Mores, and Morals We must take into account in endeavoring to ascertain the limits of natural groups, as the internal anatomy and the embryology and metamorphosis of insects, before we can hope to obtain a natural classification. Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses In the evolution of the bony system we find the same correspondence of embryology and evolution. The World's Greatest Books — Volume 15 — Science And here it is that the constructive argument in favour of evolution which is derived from embryology may be said properly to commence. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions But if we are to admit the human point of view, a glance at the facts of embryology must produce very uncomfortable reflections. Evolution, Old & New Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, as compared with that of Charles Darwin The most certain clue to what nature meant any animal to become is to be learned from its embryology. Natural Law in the Spiritual World It is fully confirmed by all the arguments of comparative anatomy and embryology, of palaeontology and physiology; and all the research of the subsequent forty years have gone to establish it. Evolution in Modern Thought He is not only a master of zoology, but has a good command of botany and embryology. The World's Greatest Books — Volume 15 — Science The similarities, therefore, which it is the function of comparative embryology to reveal are the similarities of type or morphological plan: not similarities of specific detail. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions It has long been felt that embryology and rudimentary structures indicated community of descent. Evolution, Old & New Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, as compared with that of Charles Darwin It would deal with the embryology of war. The Ghost in the White House Some suggestions as to how a hundred million people (who are supposed in a vague, helpless way to haunt the white house) can mak In the evolutionary appreciation of the facts of embryology we must take particular care to distinguish sharply and clearly between the primary, palingenetic evolutionary processes and the secondary, cenogenetic processes. Evolution in Modern Thought For millions of years the early soft-bodied animals left no trace in the primitive mud, which time has hardened into rocks, and we are restricted to the evidence of embryology and of comparative zoology. The World's Greatest Books — Volume 15 — Science Moreover, when the embryology of the Worms is closely studied, the origin of these different roads admits of being clearly traced. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions Owing to the immense size of its spermatozoa, it has rendered great aid to embryology, a science which, when understood au fond, will bring about great changes in the human race. Memoirs We master the embryology of war between persons—the embryology of war between classes, and then between nations. The Ghost in the White House Some suggestions as to how a hundred million people (who are supposed in a vague, helpless way to haunt the white house) can mak The four types dealt with in this book are extremely convenient for developing the methods of comparative anatomy and morphological embryology. Text Book of Biology, Part 1: Vertebrata We may now take the various systems of organs one by one, and, if we are careful to consult embryology as well as zoology, we can trace the manner of their development. The World's Greatest Books — Volume 15 — Science So that when all this mass of evidence is taken together, we cannot wonder that evolutionists should now regard the science of comparative embryology as the principal witness to their theory. Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions I wish I knew something about biochemical embryology; but I read somewhere that ova are sterile, so our galaxy is an ovum. The Galaxy Primes Reference has already been made to certain accidents of embryology during the very early days or weeks of the formative period of the embryo. The Mother and Her Child To such, practical work in embryology is either altogether impossible, or only possibly to a very limited extent. Text Book of Biology, Part 1: Vertebrata Lamarck died before the rise of the sciences of morphology, embryology, and cytology. Lamarck, the Founder of Evolution His Life and Work It is interesting to note that in Owen's opinion comparative anatomy explains embryology. Form and Function A Contribution to the History of Animal Morphology The facts of anatomy, physiology, and embryology, of which we have given illustrations, all point to man's affiliation with the order of monkeys and apes. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told The problems of embryology and of diseases of childhood interested him as they did many other of the early Christian writers. Old-Time Makers of Medicine The Story of The Students And Teachers of the Sciences Related to Medicine During the Middle Ages Now the independent study of embryology suggests exactly the same pedigree, and the entirely independent testimony of palaeontology is precisely in harmony with the already confirmed theory arrived at in this way. Text Book of Biology, Part 1: Vertebrata In 1818 he began to discuss philosophical anatomy, the doctrine of homologies; he also studied the embryology of the mammals, and was the founder of teratology. Lamarck, the Founder of Evolution His Life and Work He could prove from embryology that the jaws were not the equivalent of limbs, as so many Okenians believed. Form and Function A Contribution to the History of Animal Morphology There is still another important line of evidence which we cannot afford to overlook; I mean the argument from embryology. The Scientific Evidences of Organic Evolution All this is so modern in many ways that we might expect a detailed exact knowledge of the anatomy of the teeth and even something of their embryology from Arculanus. Old-Time Makers of Medicine The Story of The Students And Teachers of the Sciences Related to Medicine During the Middle Ages It is seeing and thinking, much more than reading, which will enable him to clothe the bare terms and phrases of embryology with coherent knowledge. Text Book of Biology, Part 1: Vertebrata Lamarck had already, so far as he could without a knowledge of modern morphology, embryology, cytology, and histology, suggested those fundamental principles of transformism on which rests the selective principle. Lamarck, the Founder of Evolution His Life and Work This opinion arose when there was little real knowledge of embryology; it threw light indeed upon certain cases of monstrous development, but it was pushed altogether too far. Form and Function A Contribution to the History of Animal Morphology It has long been felt that embryology and rudimentary structures indicated community of descent. Selections from Previous Works and Remarks on Romanes' Mental Evolution in Animals It would appear from this that microscopic embryology has been with Dr. Thomson a favourite field of study and research from his youth upwards. Western Worthies A Gallery of Biographical and Critical Sketches of West of Scotland Celebrities The subject grew under his hands and the course extended itself into thirty-five lectures, covering the whole field of natural history, with many short excursions into the realms of biology, embryology, botany, geology and cosmogony. Little Journeys to the Homes of the Great - Volume 12 Little Journeys to the Homes of Great Scientists With all its mastery of the laws of heredity, of cytology, and of embryology, it cannot tell why a man is a man, and a dog is a dog. The Breath of Life What interests us chiefly in the work of this embryological period is, of course, the relation of embryology to comparative anatomy and to pure morphology. Form and Function A Contribution to the History of Animal Morphology But if we are to admit the human point of view, a glance at the facts of embryology must produce very uncomfortable reflections. Selections from Previous Works and Remarks on Romanes' Mental Evolution in Animals And how beautifully logical is the order of our ancestry as demonstrated by the science of embryology. Visionaries He had studied embryology, and had seen how the body of a man begins as a single minute mass of protoplasm, without organs or dimensions. Little Journeys to the Homes of the Great - Volume 12 Little Journeys to the Homes of Great Scientists There was now a new method for investigating such problems, the method of embryology, which, practically, had not been available to Oken, and of which neither Cuvier nor Owen had made proper use. Thomas Henry Huxley; A Sketch Of His Life And Work Serres was primarily a medical anatomist; his interest lay in human anatomy and embryology, normal and pathological. Form and Function A Contribution to the History of Animal Morphology And must not the neglect of its embryology lead to a misunderstanding of the principles of its evolution and of its existing organisation? Essays on Education and Kindred Subjects Everyman's Library As a result the biologist to-day is showing less confidence in embryology, and is turning his attention in different directions as more promising of results in the line desired. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity In embryology he has proved it to the satisfaction of the scientific world. Little Journeys to the Homes of the Great - Volume 12 Little Journeys to the Homes of Great Scientists The data of embryology are likewise coextensive with the territory of the animal world, for we do not know of any form which does not change in the course of its life history. The Doctrine of Evolution Its Basis and Its Scope It was largely a German science, this new embryology, and its leaders were all personally acquainted. Form and Function A Contribution to the History of Animal Morphology "It's amazing how few lay people know even the elements of embryology." Captivity Many a bit of obscurity has been cleared up when the embryology of puzzling animals has been studied. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity I therefore turned my attention to the special study of embryology, as I fortunately possessed sufficient private means to enable me—by careful living—to dispense with the usual proceeds of my profession. The Green Eyes of Bâst Not until the investigator becomes familiar with a wide range of diverse animals and the peculiar qualities of their similar early stages, can he estimate the tremendous weight of the facts of comparative embryology. The Doctrine of Evolution Its Basis and Its Scope This second volume is intended as an introduction to embryology for the use of doctors and science students. Form and Function A Contribution to the History of Animal Morphology The detailed study of embryology, however, has led to most important results apart from the particular purpose for which most of the earlier investigations in this field were originally undertaken. Recent Developments in European Thought This aid of embryology has been particularly valuable in just that part of the history where the evidence from the study of fossils is wanting. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity The embryology of turtles throws light upon the fossil chelonians. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 But it must not be forgotten that the doctrine is already securely founded upon the basic principles of anatomy and embryology. The Doctrine of Evolution Its Basis and Its Scope The greatest modern treatise on embryology ends on a splendid note. Form and Function A Contribution to the History of Animal Morphology For the study of embryology, at first purely descriptive and comparative, was soon found to involve fundamental problems concerning the factors which control development. Recent Developments in European Thought The study of fossils, as we have seen, gives little or no data concerning the early history of living machines; and it is just here that embryology has proved to be of the most value. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity First, the comparative anatomy of all the different groups of animals; second, their comparative embryology; and third, their palæontological history. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 In the earliest stages of human embryology no nervous system whatsoever is present, and it is unreasonable to suppose that there is anything going on which corresponds to human thought. The Doctrine of Evolution Its Basis and Its Scope In much the same form as it was propounded by Müller it was adopted by Haeckel, and made the corner-stone of his evolutionary embryology. Form and Function A Contribution to the History of Animal Morphology Certain observations on the embryology of the lower animals are held to afford direct proof of this theory of heredity, but they are too technical to be made clear to ordinary readers. Darwinism (1889) In spite of its limits, therefore, embryology has contributed a large quota of the evidence which we have of the evolution of life. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity But many facts of embryology and comparative anatomy point to such a form as a very possible ancestor of all forms higher than flat worms, viz., mollusks, arthropods, and vertebrates. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The facts of embryology alone are sufficient proof of the ascent of Man from the lowly forms. A Series of Lessons in Gnani Yoga Morphology falls naturally into two divisions—comparative anatomy and embryology. Form and Function A Contribution to the History of Animal Morphology In speaking of such allegories and tracing the correspondences between certain symbologies and the natural facts of embryology, Simon speaks of the "cave" which plays so important a part in so many religious allegories. Simon Magus This parallelism between embryology and past history has been of great service in helping us toward the history of the past. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity If we appeal from adult anatomy to embryology the case becomes all the worse for us. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 We had a zoölogical laboratory in which were conducted the zoölogical half of a course in general biology and numerous other courses in animal morphology, mammalian anatomy, comparative anatomy and embryology. The Philippines: Past and Present (Volume 1 of 2) This recognition of the parallelism between comparative anatomy and embryology is, of course, the kernel of the Meckel-Serres law. Form and Function A Contribution to the History of Animal Morphology Their geological history has been very thoroughly studied; not only are we familiar with all their adult characters, but even their embryology is well known to naturalists. The Atlantic Monthly, Volume 11, No. 66, April, 1863 But although the teachings of embryology have failed to realize the great hopes that were placed upon them, their assistance in the formulation of this history of the machine has been of extreme value. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity That the mouth of an animal can migrate seems at first impossible, but if we had time to examine the embryology of annelids and insects, it would no longer appear inconceivable or improbable. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The histologist dabbled in embryology and was soon duplicating our course in the embryology of the chick. The Philippines: Past and Present (Volume 1 of 2) Between comparative anatomy and embryology there exists a close connection, for the one throws light on the other. Form and Function A Contribution to the History of Animal Morphology The embryology of the modern types confirms this idea, for here we find an epitome of their geological history. The Atlantic Monthly, Volume 11, No. 66, April, 1863 The history as disclosed by fossils and that told by embryology agree with each other, and these are in close harmony with the history as it can be read from comparative anatomy. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity To answer this would require a course of lectures on embryology. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Developmental anatomy: a textbook and laboratory manual of embryology. U.S. Copyright Renewals, 1973 July - December Phylogenetic method differed in no way from transcendental—except perhaps that it had learnt from von Baer and from Darwin to give more weight to embryology. Form and Function A Contribution to the History of Animal Morphology The psychology of the child is of the same significance for general psychology as embryology is for anatomy. The Education of the Child One is written in the rocks, one in bone and muscle, while the third is recorded in the evanescent and changing pages of embryology and metamorphosis. The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity And this study of embryology brought to light many new and interesting facts. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 Some preliminary knowledge of embryology is essential to understand the formation of branchial fissures, and we refer the reader to any of the standard works on embryology for this information. Anomalies and Curiosities of Medicine His system, which is based more firmly upon the facts of experimental embryology than Semon's, postulates the existence of "specific nervous accumulators." Form and Function A Contribution to the History of Animal Morphology If you have not yet done so, study at once some good work on embryology, and learn with amazement and awe of your marvelous transformations before birth. Editorials from the Hearst Newspapers He had only the most meager acquaintance with that great fundamental of a sound and sane education, embryology. The Grain of Dust Place side by side all possible genealogical trees of the animal kingdom, whether founded on comparative anatomy, embryology, palæontology, or all combined. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The study of biology, and especially of embryology, is an easy and simple way of disintegrating the "impurity complex". The Mind in the Making The Relation of Intelligence to Social Reform Not only did he lay a foundation for comparative anatomy, but he made a real start with comparative embryology. Form and Function A Contribution to the History of Animal Morphology When Agassiz came into the laboratory, I was extracting and preserving the embryos, being interested in embryology. Louis Agassiz as a Teacher; illustrative extracts on his method of instruction But when one turns to the morphological sciences of anatomy, histology, embryology, and pathology, one discovers great gaps, where knowledge might reasonably be expected. The Mental Life of Monkeys and Apes A Study of Ideational Behavior Its anterior portion appears from embryology to be very primitive. The Whence and the Whither of Man A Brief History of His Origin and Development through Conformity to Environment; Being the Morse Lectures of 1895 The science of embryology shows that this rule holds good without exception throughout the whole range of the animal world, including man; and botany shows the same principle at work throughout the vegetable world. The Edinburgh Lectures on Mental Science Work on comparative embryology is contained in the treatise "On the Development of the Child." Form and Function A Contribution to the History of Animal Morphology As another great factor in bringing about the change of opinion which has taken place among naturalists, I count the astonishing progress which has been made in the study of embryology. Darwiniana : Essays — Volume 02 Unfortunately, this trustful theory is in such flagrant contradiction to all the known facts of paleontology and embryology that it is no longer worth serious scientific consideration. The Evolution of Man — Volume 2 Only after these comparative-anatomical considerations shall we be in a position to attack the difficult question of our embryology. The Evolution of Man — Volume 1 In the introduction to his work on embryology he gratefully acknowledges his debt to his old teacher. Louis Agassiz: His Life and Correspondence The experimental study of form was prosecuted in many other directions besides that of experimental embryology. Form and Function A Contribution to the History of Animal Morphology There is something gruesome and inhuman about embryology and all other studies of origins. Problems of Conduct The ontogeny of the organs can only be understood in the light of their phylogeny, just as we found of the embryology of the whole body. The Evolution of Man — Volume 2 Much, of course, will seem to the reader to be essential that is only of subordinate and secondary interest, or even not essential at all, in the light of comparative anatomy and embryology. The Evolution of Man — Volume 1 I am now at Nahant, on the sea-shore, studying embryology chiefly with reference to paleontology, and the results are most satisfactory. Louis Agassiz: His Life and Correspondence At the close of this same chapter, a few observations were appended on what may be called the embryology of leaves. The Power of Movement in Plants We have indeed the analogy of embryology to help us. Pragmatism Within the vertebrate stem there is, as we have already seen, so complete an agreement in structure and embryology that it is impossible to doubt their phylogenetic unity. The Evolution of Man — Volume 2 This idea, which dominated the whole treatment of the embryology of the higher vertebrates until thirty years ago, was totally false. The Evolution of Man — Volume 1 I admire the long series of physiological investigations, beginning with the embryology of the so-called simple and lower organisms and ascending by degrees to the more complicated. Louis Agassiz: His Life and Correspondence Embryology of Leaves.—A few facts have been incidentally given in this chapter on what may be called the embryology of leaves. The Power of Movement in Plants These fins seem to be remnants of the continuous fold of skin which, as embryology teaches, passed from fore to aft down each side of the primitive vertebrate. The Elements of Geology The more we go into the details of organic development, and the more closely we follow the rise of the various parts, the more we see the inseparable connection of embryology and stem-history. The Evolution of Man — Volume 2 In this way, comparative anatomy enters into the closest relations with comparative embryology on the one hand, and with the science of classification on the other. The Evolution of Man — Volume 1 In the lower animals, and as illustrating the embryology of the marine invertebrates, they were especially valuable. Louis Agassiz: His Life and Correspondence They may therefore be considered as almost rudimentary; and in accordance with the general principles of embryology, they ought to be more constantly and fully developed on very young than on old plants. The Power of Movement in Plants And of their supposed descendants we find so few traces in the pre- Cambrian strata that the first steps in organic evolution must be supplied from such analogies in embryology as the following. The Elements of Geology Nevertheless, as we know from human embryology, the medullary tube is formed from the cutaneous layer. The Evolution of Man — Volume 2 We have now, by our study of the ovum and the comparison of it with the amoeba, provided a perfectly sound and most valuable foundation for both the embryology and the evolution of man. The Evolution of Man — Volume 1 It treats of the relations, anatomical, zoological, and geological, between the whole class of fishes, fossil and living, illustrated by numerous plates, while additional light is thrown on the whole by the revelations of embryology. Louis Agassiz: His Life and Correspondence We can thus understand why embryology throws a flood of light on the natural system of classification, as this ought to be as far as possible genealogical. The Variation of Animals and Plants under Domestication — Volume 2 The recent progress of embryology is indeed splendid. More Letters of Charles Darwin — Volume 2 In order to understand the embryology of the human vertebral column we must first carefully consider the shape and connection of the vertebrae. The Evolution of Man — Volume 2 The chief source that it draws upon for facts is "Ontogeny," or embryology, the science of the development of the individual organism. The Evolution of Man — Volume 1 I rather doubt whether you see how far, as it seems to me, the argument for homology and embryology may be carried. More Letters of Charles Darwin — Volume 1 These facts, simple as they appear, throw light on the differences between the larval and adult states of allied natural species, and on the whole great subject of embryology. The Variation of Animals and Plants under Domestication — Volume 2 Thus, if we may rely on embryology, ever the safest guide in classification, it seems that we have at last gained a clue to the source whence the Vertebrata were derived. The Descent of Man Our embryology has taught us that this first structure of the central nervous system also develops originally from the outer germinal layer. The Evolution of Man — Volume 2 This position is fully confirmed by comparative embryology. The Evolution of Man — Volume 1 But, as Huxley has never alluded to my explanation of classification, morphology, embryology, etc., More Letters of Charles Darwin — Volume 1 I should have liked to have seen some criticisms or remarks on embryology, on which subject you are so well instructed. Life and Letters of Charles Darwin — Volume 2 Why I think that species have really changed, depends on general facts in the affinities, embryology, rudimentary organs, geological history, and geographical distribution of organic beings. Life and Letters of Charles Darwin — Volume 1 The embryology of the hairs is known in all its details, but there are two different views as to their phylogeny. The Evolution of Man — Volume 2 The first five chapters are an easy account of the history of embryology and evolution. The Evolution of Man — Volume 1 This seems to me the most interesting discovery in embryology which has been made for years. More Letters of Charles Darwin — Volume 1 But against the belief in such abrupt changes, embryology enters a strong protest. The Origin of Species by means of Natural Selection, 6th Edition But in animals, embryology leads me to an enormous and frightful range. Life and Letters of Charles Darwin — Volume 1 When we approach this task, we find an auxiliary of the utmost importance in the comparative anatomy and embryology of two lower animal-forms. The Evolution of Man — Volume 2 He took the keenest interest in embryology, and worked at it a good deal. The Evolution of Man — Volume 1 I am very much obliged to you for your kindness in having sent me your valuable memoir on the embryology of the extinct cephalopods. More Letters of Charles Darwin — Volume 1 Phylogeny, embryology as a clue to.—Palaeontological evidence on. Darwin and Modern Science We cannot pursue the mind into embryology: we can only trace how, after birth, it begins to grow. Theaetetus The embryology of it is most instructive in connection with the stem-history of the body-cavity in man and the other vertebrates. The Evolution of Man — Volume 2 We may distinguish three chief periods in the growth of our science of human embryology. The Evolution of Man — Volume 1 Darwin had become, as he himself says, a veritable Croesus, "overwhelmed with his riches in facts"—facts of zoology, of selective artificial breeding, of geographical distribution of animals, of embryology, of paleontology. A History of Science — Volume 4 But a deeper reason than this has been assigned for the importance of embryology in classification. Darwin and Modern Science He was then well along in years, but still pursued his scientific researches with the same vigor as before, directing his attention chiefly to the study of embryology. A History of Science — Volume 2 But since the remarkable embryology of these animals was discovered in 1866, there can be no question that they have nothing to do with the molluscs. The Evolution of Man — Volume 2 The book proved to be the foundation on which the whole science of embryology has built down to our own day. The Evolution of Man — Volume 1 It was in pursuit of experiments to establish his theory of irritability that Haller made his chief discoveries in embryology and development. A History of Science — Volume 4 If this law could be established it would undoubtedly be a strong argument in favour of the "recapitulation" explanation of the facts of embryology. Darwin and Modern Science I refer the reader to textbooks in anatomy and embryology, and to the specialists on sex like Krafft-Ebbing, Havelock Ellis and Ploss for details as to the differences between man and woman. The Foundations of Personality The chief result that we obtain from its embryology is the complete agreement with that of the Amphioxus in the earliest and most important embryonic stages. The Evolution of Man — Volume 2 It so far surpassed its predecessors, and Pander in particular, that it has become, after Wolff's work, the chief base of modern embryology. The Evolution of Man — Volume 1 As the creator of the sciences of comparative anatomy, systematic zoology, embryology, teratology, botany and physiology, his writings have an eternal interest. The Evolution of Modern Medicine A Series of Lectures Delivered at Yale University on the Silliman Foundation in April, 1913 Thus the valuable aid of embryology is obtained in determining relationships. Darwin and Modern Science And I make bold to say, that the recent discoveries of physical science—notably those of embryology—go only to justify that old and general belief of man. The Ancien Regime Under palingenesis we count those facts of embryology that we can directly regard as a faithful synopsis of the corresponding stem-history. The Evolution of Man — Volume 2 About the same time a great impetus was given to the embryology of the invertebrates. The Evolution of Man — Volume 1 Another method of retracing the lost early chapters in the development of life is furnished by embryology. The Story of Evolution It is fully confirmed by all the arguments of comparative anatomy and embryology, of palaeontology and physiology; and all the research of the subsequent forty years has gone to establish it. Darwin and Modern Science Amphioxus, the. circulation of the. coelomation of the. embryology of the. structure of the. The Evolution of Man — Volume 2 In order to distinguish correctly between palingenetic and cenogenetic phenomena in embryology, and deduce sound conclusions in connection with stem-history, we must especially make a comparative study of the former. The Evolution of Man — Volume 2 A very important advance was made in our science in 1839, when the cellular theory was established, and a new field of inquiry bearing on embryology was suddenly opened. The Evolution of Man — Volume 1 This compels us to recognise in this great genius, who wrought a complete revolution in the whole field of biology, a founder at the same time of a new period in embryology. The Evolution of Man — Volume 1 Darwin's own views of the bearing of the facts of embryology upon questions of wide scientific interest are perfectly clear. Darwin and Modern Science The Dutch scientist, Swammerdam, published in his Bible of Nature the earliest observations on the embryology of the frog and the division of its egg-yelk. The Evolution of Man — Volume 1 Next to the fishes come the amphibia, from the embryology of which we can also draw instructive conclusions. The Evolution of Man — Volume 2 The first works on embryology appear at the beginning of the sixteenth century. The Evolution of Man — Volume 1 Until then embryology had been occupied almost exclusively in unfortunate and misleading efforts to build up theories on the imperfect empirical material then available. The Evolution of Man — Volume 1 The facts of embryology have so great and obvious a significance in this connection that even in recent years dualist and teleological philosophers have tried to rid themselves of them by simply denying them. The Evolution of Man — Volume 1 It is only with the aid of embryology that we can grasp how these highest and most striking faculties of the animal organism have been historically evolved. The Evolution of Man — Volume 1 Let us see if we cannot meet this grave stricture from the well-known facts of comparative anatomy, physiology, and embryology. The Evolution of Man — Volume 2 These two branches of our science—on the one side ontogeny or embryology, and on the other phylogeny, or the science of race-evolution—are most vitally connected. The Evolution of Man — Volume 1 One notices, in several of these recent works on embryology, that their authors are too little acquainted with comparative anatomy and classification. The Evolution of Man — Volume 1 I there made a thorough investigation of the almost unknown embryology of the siphonophorae. The Evolution of Man — Volume 1 This is particularly clear as regards the comparative embryology of the vertebrates, because here the phylogenetic unity of the stem has been already established by the well-known facts of paleontology and comparative anatomy. The Evolution of Man — Volume 1 We already know from embryology the manner in which the gut develops in the embryo of man and the other mammals. The Evolution of Man — Volume 2 The causal character of the relation which connects embryology with stem-history is due to the action of heredity and adaptation. The Evolution of Man — Volume 1 Here, and in every other part of embryology, the true key to the solution lies in phylogeny. The Evolution of Man — Volume 1 Roughly, ontogeny may be taken to mean embryology, and phylogeny what we generally call evolution. The Evolution of Man — Volume 1 This important discovery was bound to be of service to embryology, as it raised a number of new questions. The Evolution of Man — Volume 1 The complete unity of structure which is thus revealed by the comparative anatomy of the limbs is fully confirmed by their embryology. The Evolution of Man — Volume 2 Among the many great services which Baer rendered to embryology, especially vertebrate embryology, we must not forget his discovery of the human ovum. The Evolution of Man — Volume 1 Hundreds of assiduous and able observers are now engaged in the development of comparative embryology and its establishment on a basis of evolution, whereas they numbered only a few dozen not many decades ago. The Evolution of Man — Volume 1 This must be said of the many contributions of mechanical embryology which take up a position of hostility to the theory of descent and its chief embryological foundation—the biogenetic law. The Evolution of Man — Volume 1 This law, however, when rightly understood, is not opposed to, but is the best and most solid support of, a sound mechanical embryology. The Evolution of Man — Volume 1 The embryology of all the other parts of the vascular system also gives us abundant and valuable data for the purposes of phylogeny. The Evolution of Man — Volume 2 Scarcely any piece of knowledge has contributed so much to the advance of embryology as this; its formulation is one of the most signal services to general biology. The Evolution of Man — Volume 1 The embryology of man and the animals, the history of which we have reviewed in the last two chapters, was mainly a descriptive science forty years ago. The Evolution of Man — Volume 1 This gifted scientist succeeded in mastering, by a complete reform of the science, the great difficulties which the cellular theory had at first put in the way of embryology. The Evolution of Man — Volume 1 But this attempt was bound to miscarry, since its not very clear-headed author lacked a sound acquaintance with embryology and the cell theory, and even with the structure and development of the tissue in particular. The Evolution of Man — Volume 1 It meets with difficulties equally great and insuperable in embryology and in phylogeny. The Evolution of Man — Volume 2 A new branch of embryological research has been studied very assiduously in the last decade of the nineteenth century—namely, "experimental embryology." The Evolution of Man — Volume 1 All the best recent research in animal embryology has led to the confirmation and development of Baer and Remak's theory of the germinal layers. The Evolution of Man — Volume 1 Finally, we must, in my opinion, count among the chief inductive bases of the theory of evolution the foetal development of the individual organism, the whole science of embryology or ontogeny. The Evolution of Man — Volume 1 They are furnished in the strongest form by the data of comparative anatomy and embryology, completed by paleontology. The Evolution of Man — Volume 1 Far more intricate are the processes of human embryology; in these are condensed and comprised thousands of the phylogenetic processes. The Evolution of Man — Volume 2 Wilhelm Roux, in particular, has made extensive experiments, and based on them a special "mechanical embryology," which has given rise to a good deal of discussion and controversy. The Evolution of Man — Volume 1 I say this is very important, because our whole science of embryology now resolves itself into the problem: "How does the multicellular organism arise from the unicellular?" The Evolution of Man — Volume 1 |
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