| 单词 | pinna |
| 例句 | But I guess that if the Latin word for feather had been frindilus instead of pinna, then you probably would have invented the word pen instead. Frindle 1996-01-01T00:00:00Z “And after all, didn’t somebody just make up the word pinna, too?” Frindle 1996-01-01T00:00:00Z The leaflet, or pinna, of the glade fern is quite coarse and contrasts strikingly with its wispier neighbor. Fronds with benefits: A guide to ferns 2015-07-08T04:00:00Z The visible part of the exterior ear is called the pinna. Fundamentals of Biology 2015-01-01T00:00:00Z Without the malleus and incus, the vibrations of the pinna would not be able to reach the stapes and then be sent to the cochlea. Biology for AP Courses 2022-06-09T00:00:00Z Some sources will also refer to this structure as the pinna, though that term is more appropriate for a structure that can be moved, such as the external ear of a cat. Anatomy and Physiology 2013-06-19T00:00:00Z Researchers have found a new protozoan, Haplosporidium pinnae, in dead and dying mussels. Iconic Mediterranean mussel, one of world's largest, faces ‘imminent extinction’ 2021-11-17T05:00:00Z No matter your ear shape, to hear more clearly when speaking with someone face to face, simply cup the pinnas with your hands to concentrate the oncoming sound. Why Are Human Ears Shaped That Way? 2016-09-19T04:00:00Z The ear canal extends inward from the pinna to a circular membrane called the tympanum. Fundamentals of Biology 2015-01-01T00:00:00Z Without the malleus and incus, sound waves would not be collected by the pinna. Biology for AP Courses 2022-06-09T00:00:00Z The human pinna also helps determine sound direction. Ears: Do Their Design, Size and Shape Matter? 2015-11-19T05:00:00Z Carella says bacterial infections are having a greater impact than the parasite in Italy as well as Greece and Croatia, noting that H. pinnae was absent when she first described the disease in Italy. Iconic Mediterranean mussel, one of world's largest, faces ‘imminent extinction’ 2021-11-17T05:00:00Z Their pinnae are strongly reduced: essentially just being a slim semicircle of tissue concealed by pelage. North America: land of obscure, freaky voles 2014-01-13T16:45:00.548Z The mastoid portion of the temporal bone, which can be felt as a bump in the skull behind the pinna, also contains air, which ventilates through the middle ear. Fundamentals of Biology 2015-01-01T00:00:00Z Transmission in External Ear.—The external ear consists of the pinna, or auricle, and the external auditory meatus, or canal, at the bottom of which we find the membrana tympani, or drum head. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z So now you understand a little more about the human pinnae. Ears: Do Their Design, Size and Shape Matter? 2015-11-19T05:00:00Z In uinta the external opening of the ear is much larger; the pinna of the ear is larger, more rounded at the tip, and lacks most of the pigmentation on the inner margin. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z Closer examination then and later revealed that the pinna was normal in all respects except that the tip was missing. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The first leaves borne on the seedling axis are often scale-like, and these are followed by two or more larger laminae, which foreshadow the pinnae of the adult frond. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z In the dog and the cat it arises from the base of the pinna of the ear, from the portion of this base which bears the name of scutiform cartilage. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z The researchers analyzed the pinnae with high-speed video and high-resolution imaging. Bat Ears Deform For Better Ping Pickups 2011-12-03T01:45:00.447Z Color: Usually lighter; postauricular patches larger and darker; ears small with pinnae deeply pigmented as opposed to large and lightly pigmented. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z One female of P. truei, born in captivity, had a congenital defect of the pinna of the right ear, noted on the fifteenth day after birth. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z Finally, in the pinnae of the frond the centrifugal xylem may disappear, the protoxylem being now exarch in position and abutting on the phloem. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z It is covered by the auricular muscles, and by the base of the pinna of the ear. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z And they have with them a fish called the pinnophylax, or guard of the pinna, which some call καρίδιος, and others καρκίνιος; and if they lose him, they are soon destroyed. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z Thomomys talpoides uinta, oquirrhensis may be differentiated as follows: Color: Darker throughout; postauricular patches larger and darker; ears longer and more pointed; inner margin of pinna heavily pigmented; external opening of ear smaller. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z When the mouse was subadult, this defective pinna was approximately half as long as the normal pinna. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z The various genera are distinguished from one another by the shape and manner of attachment of the pinnae, the form of the carpellary scales, and to some extent by anatomical characters. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z In the human species, the pinna of the ear being generally immobile, the muscles which belong to it are, very naturally, considerably atrophied. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z The pinna and the guard of the pinna assist one another, not being able to remain apart. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z Color: Upper parts Dresden Brown, grading over sides to Pale Buff on underparts; chin white; ears small, pointed, with deeply pigmented pinnae; postauricular patches grayish black; nose dusky. The Pocket Gophers (Genus Thomomys) of Utah, Vol. 1 No. 1 Kansas University Publications. 2012-03-19T02:00:23.340Z The topmost part of the defective pinna was somewhat more constricted in circumference than the normal one. Comparative Ecology of Pinyon Mice and Deer Mice in Mesa Verde National Park, Colorado 2012-02-24T03:00:32.243Z There are always eight tentacles, which are hollow and fringed on their sides, with hollow projections or pinnae; and always eight mesenteries, all of which are complete, i.e. inserted on the stomodaeum. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" The pinna of the ear is extremely mobile, and its displacements have a real value from the point of view of physiognomical expression. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z But Pamphilus the Alexandrian, in his treatise on Names, says that he is born at the same time with the pinna. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z In respect of anatomical considerations, it is true that the external ear is much reduced, the “pinna” being absent, and the tube or “meatus” of very small calibre. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" Eutamias sonomae Grinnell Figure 4 Upper parts rich reddish, more or less dulled by gray; backs of pinnae of ears nearly bare; tail long and bushy; size large; skull large, long, and narrow; rostrum deep. The Baculum in the Chipmunks of Western North America The pinnae are formed by the elongated autozooids, whose proximal portions are fused together to form a leaf-like expansion, from the upper edge of which the distal extremities of the zooids project. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" Because the pinna of the horse’s ear is so very mobile, we will first begin with a study of its auricular muscles. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z And again Speusippus enumerates separately in regular order the cockle, the periwinkle, the mussel, the pinna, the solens; and in another place he speaks of oysters and limpets. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z Four larval Ixodid ticks, Dermacentor possibly variabilis, were removed from the pinnae of the ears of a live specimen of cansensis from 3 mi. Natural History of the Brush Mouse (Peromyscus boylii) in Kansas With Description of a New Subspecies The pinna, in many animals, is movable; in those that pursue their prey, it is generally directed forward; in timid animals, as the hare and rabbit, it is directed 415 backward. A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) Shape of pinna. long and pointed. broad and rounded. broad and rounded. Genera and Subgenera of Chipmunks The zygomatico-auricularis, which we look on as the homologue of the anterior auricular of man, draws the pinna of the ear forwards. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Oysters are of all the following kinds: there are the pinna, the mussel, the oyster, the cteis, the solen, the cockle, the limpet, the small oyster, the balanus. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z Two larval Ixodid ticks, Ixodes possibly cookei, were removed from the pinnae of the ears of a specimen of cansensis from the type locality, 4 mi. Natural History of the Brush Mouse (Peromyscus boylii) in Kansas With Description of a New Subspecies What is said in reference to the pinna of many animals? A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition) Shape of the pinna.—The pinna is narrower and more pointed in the subgenus Neotamias than in the subgenus Eutamias and the genus Tamias. Genera and Subgenera of Chipmunks We are supposing, in the description of the muscles which move it, that this pinna has its opening directed outwards. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z The pinna has a smooth mouth; but the large oyster has a wide mouth, and is bivalve, and has a smooth shell. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z He says that Tarentine muslins, woven from the filaments of the pinna dipped in the dye of the murex, rivalled those of Cos. Needlework As Art To straighten the canal, the pinna should be pulled upwards and backwards by the left hand. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Even the pinnae, or leaflets, were each over a yard long. The Plant Hunters Adventures Among the Himalaya Mountains Extending from the scutiform cartilage to the inner side of the concha, it contributes to the movement of rotation by which the opening of the pinna of the ear is directed forwards. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z They are found in an oyster which is something like the pinna, only less. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z The silken byssus of the great pinna, or wing-shell, is woven into dresses. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. Outstanding ears may be treated by excising a triangular or elliptical portion of skin and cartilage from the posterior surface of the pinna and uniting the cut edges with sutures. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The pinna is a variety of shell-fish not unlike the mussel; it fastens itself to the rocks and from between its shells gives out threads something like those of the spider or silkworm. The Story of Silk It inclines the pinna outwards; it is, accordingly, an abductor of the pinna. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z And so, too, the pinna, which lives at the bottom, engenders the most transparent sort of pearl; and it produces them also very pure and of large size. The Deipnosophists, or Banquet of the Learned of Athen?us 2011-08-02T02:00:21.843Z Similarly, I have used the form penna at iv 12 and vii 37, where C offers pinna. The Last Poems of Ovid Sometimes œdema over the mastoid with displacement forwards of the pinna supervenes, and simulates acute inflammation of the mastoid. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Along the Mediterranean were several places where they manufactured pinna thread. The Story of Silk It is an adductor of the pinna of the ear. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z Wounds of the pinna when produced by undeformed bullets were usually of the same slitlike nature remarked in perforations of the cartilages of the nose, and healed with equal rapidity. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre Oviparous quadrupeds resemble the viviparous, but they lack some organs, such as ears with an external pinna, mammæ, hair. Form and Function A Contribution to the History of Animal Morphology Some men, oftener than women, show on the inturned margin of the ear-trumpet or pinna, a little conical projection of great interest. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told But they never could get enough of the filament to make the industry practical, although in 1754 they did send to Pope Benedict XIV some stockings made from pinna silk. The Story of Silk Its action is analogous to that of the preceding muscle; but, further, it directs the opening of the pinna forwards. Artistic Anatomy of Animals 2011-12-17T03:00:16.893Z A Mauser bullet entered the head 1� inch above the junction of the anterior border of the left pinna with the side of the head. Surgical Experiences in South Africa, 1899-1900 Being Mainly a Clinical Study of the Nature and Effects of Injuries Produced by Bullets of Small Calibre The external ear is called auricle or pinna. Mother's Remedies Over One Thousand Tried and Tested Remedies from Mothers of the United States and Canada The weight of these pinnas may be increased nearly a third, by dipping them while red hot into water. A General History and Collection of Voyages and Travels, Volume 11 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time Since then the weaving of pinna silk has been abandoned, although now and then one sees bits of it in some old fabric, or on exhibition somewhere. The Story of Silk The peculiar ramenta are to be looked for along the insertion of each pinna, and along the rachis, in which all have the peculiar structure. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries The rachis of the stem is divided into distinct internodes, from each of which are given off two pinnae, and upon which are also placed usually six cells, three on either side. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The pinnate--from pinna, Latin for feather' --leaves are composed of from nine to twenty-five leaflets, which are egg-shaped, with a short point, very smooth, light green above and still lighter beneath. Among the Trees at Elmridge When they design to make many pinnas, or spongy lumps of various weights, these are divided from each other by thin beds or layers of earth, which hinder them from uniting. A General History and Collection of Voyages and Travels, Volume 11 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time The parts of the oak fern develop with great regularity, each pinna, pinnule and lobe having another exactly opposite to it nearly always. The Fern Lover's Companion A Guide for the Northeastern States and Canada In several cases, each pinna appears to have scales only which become barren lobes? the scales and ramenta have the same imbricate situation. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Polypidom simply pinnate, about two inches high: longest pinnae about half an inch. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The tentacles lengthened and the pinnae reappeared, the larvae assuming their normal aspect. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 On the evaporation of the mercury, nothing remains but a spongy lump of contiguous grains of silver, very light and almost mouldering, called la pinna by the Spaniards. A General History and Collection of Voyages and Travels, Volume 11 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time The sterile fronds may be distinguished from those of the cinnamon fern by not having retained, like those, a tuft of wool at the base of each pinna. The Fern Lover's Companion A Guide for the Northeastern States and Canada The right pinna was entire, and the upper half of the left pinna had disappeared. Anomalies and Curiosities of Medicine Stems or branches pinnate: pinnae or branches alternate, straight, divaricate. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 During a period of enforced starvation, these pinnae were gradually absorbed, and the tentacles shortened, from tip to base. Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86 It also sometimes happens that the same mass of pinna may be of different fineness in different parts. A General History and Collection of Voyages and Travels, Volume 11 Arranged in Systematic Order: Forming a Complete History of the Origin and Progress of Navigation, Discovery, and Commerce, by Sea and Land, from the Earliest Ages to the Present Time Fronds pale green, one to six feet high; sterile part bipinnate, each pinna having numerous pairs of lance-oblong, serrulate pinnules alternate along the midrib. The Fern Lover's Companion A Guide for the Northeastern States and Canada I am sorry to say that, from these last accounts of the pinna and his cancer friend, Dr. Darwin's beautiful description is more poetic than accurate. The Life and Letters of Maria Edgeworth, Volume 1 Polypidom simply pinnate, about 2 1/2 inches high; pinnae in the middle 3/4 of an inch. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The external ear, the pinna, is well formed, and has begun to stand out from the head, but no opening to the inner portion of the ear is present. The Dancing Mouse A Study in Animal Behavior From the pinna, silk of a peculiar quality is obtained. Scientific American Supplement, No. 362, December 9, 1882 In its crosier stage it is wrapped in wool, which falls away as the fronds expand, but leaves, at the base of each pinna, a tiny tuft, as if to mark its identity. The Fern Lover's Companion A Guide for the Northeastern States and Canada After a few minutes, a certain confidence being established between us, the pinna emerged from its retirement, in so far as such creatures are permitted by Nature. Tropic Days The pairs of cells on the pinnae are all secund, and in contact with each other at their bases, though widely divergent above. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The external ear consists of an expanded portion known as the pinna or auricle, and of a passage, the auditory canal or meatus, leading inwards from it. A Practical Physiology If we compare the pinna of man and the various apes in this respect, we find that they present a connected series of degenerate structures. The Evolution of Man — Volume 2 The pinnae move forwards and at the same time sink downwards, whilst the main petiole rises considerably. The Power of Movement in Plants As long as it remained within the pinna and it could not be voluntarily rejected, its size would inevitably increase. Tropic Days Colour bright brown; polypidom 2 to 3 inches high, consisting of straight pinnate fronds, pinnae or branches not opposite, nor regularly alternate, divaricate at rightangles. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 When they want to move a little they gently protrude themselves with their pinnae pectorales; but it is with their strong muscular tails only that they and all fishes shoot along with such inconceivable rapidity. The Natural History of Selborne In the common catarrhine ancestors of the anthropoids and man the degeneration set in with the folding together of the pinna. The Evolution of Man — Volume 2 In some species the petioles rise up greatly at night, and the pinnae close together. The Power of Movement in Plants Changing my position, so that the pinna might not be deprived of its share of the rays of the sun, the valves soon furtively opened. Tropic Days Stem and branches pinnate or bipinnate, the pinnae and pinnules alternate. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 In this latter respect, as well as in the sinking of the pinnae, there is a marked difference between the nyctitropic movements of the present plant and of Mimosa pudica. The Power of Movement in Plants The conducting of the sound has scarcely been affected by the loss of the pinna. The Evolution of Man — Volume 2 It has already been stated that the pinnae move independently of the main petiole. The Power of Movement in Plants I confess, though the possibility of the pearl increasing in size and loveliness was obvious, that the fact that pinnas are subject to ills, chances, and mishaps, was also recognised. Tropic Days The stems are from one to four inches long, the pinnae about 1/4 to 1/2 inch, alternate. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The penultimate pinnae during the day formed together an angle of 180o, that is, they stood in a straight line opposite one another, and at night each had moved 65o forwards. The Power of Movement in Plants The basal pair of pinnae were directed Fig. The Power of Movement in Plants But the pinnae at the same time sink greatly, and sometimes hang almost perpendicularly downwards. The Power of Movement in Plants Generally, in the case of the pinna, pearls are embedded in the muscles or soft parts, and are not primarily discernible, but have to be sought for by passing the "meat" through the fingers. Tropic Days The pinnae are also divided, but less distinctly, into internodes of various lengths. Narrative of the Voyage of H.M.S. Rattlesnake, Commanded By the Late Captain Owen Stanley, R.N., F.R.S. Etc. During the Years 1846-1850. Including Discoveries and Surveys in New Guinea, the Louisiade Archipelago, Etc. to Which Is Added the Account of Mr. E.B. Kennedy's Expedition for the Exploration of the Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist to the Expedition. — Volume 1 The pinnae approach one another, but remain in the same plane as during the day; and in this respect they differ much from those of the above Schrankia and Acacia. The Power of Movement in Plants Although the pinnae of Acacia Farnesiana do not converge much, they sink downwards. The Power of Movement in Plants With Albizzia lophantha the pinnae close together in the same manner. The Power of Movement in Plants But the habitual product of this pinna is small, dull, mud-tinted or brown, and of no value whatever. Tropic Days With Neptunia oleracea the leaflets on the opposite sides of the same pinna come into contact at night and are directed forwards. The Power of Movement in Plants The four pinnae also approach each other closely, and the whole leaf is thus rendered very compact. The Power of Movement in Plants But at the base of each pinna there is a pair of minute points, evidently rudiments of leaflets, for they are of unequal sizes, like the two succeeding leaflets. The Power of Movement in Plants The angle between the two terminal pinnae was diminished at night, in one case by 15o; and they sank almost vertically downwards. The Power of Movement in Plants We shall immediately see that the main petiole is likewise continually circumnutating, as is each separate pinna and each separate leaflet. The Power of Movement in Plants With this latter plant, moreover, the pinnae converge in the evening by a steady movement, whereas during the day they are continually converging and diverging to a slight extent. The Power of Movement in Plants The pinnae also approach each other closely, so that the four terminal leaflets come together. The Power of Movement in Plants The leaflets move towards the apex of the pinna and become imbricated, and the pinnae then look like bits of dangling string. The Power of Movement in Plants The hinder pairs of pinnae likewise sink downwards, but do not converge, that is, move towards the apex of the leaf. The Power of Movement in Plants The pinnae themselves move downwards, and at the same time backwards or towards the stem of the plant. The Power of Movement in Plants Later in the evening the four pinnae approach each other, and the one which was observed moved inwards 59o between noon and 6.45 P.M. The Power of Movement in Plants |
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