Kolreuter, whose accuracy has been confirmed by every subsequent observer, has proved the remarkable fact that one particular variety of the common tobacco was more fertile than the other varieties, when crossed with a widely distinct species.

科尔路特（Kolreuter）的准确性得到了后来每一位观察者的证实，他证明了一个值得注意的事实， 即当与一个差异很大的物种杂交时， 普通烟草的一个特定品种比其他品种更能繁殖。