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Updated: June 27, 2025
In 1883, the Bordeaux legal tribunal declared that artificial fecundation was illegitimate, and a social danger.
The materialists believe that there must be marriage, and say that a living body cannot be created from a lifeless body, and without male and female there cannot be fecundation. And they think that not only with man, but also with animals and plants, it is impossible. For this union of the male and female exists in all living beings and plants.
He proposed to set up there a national fertilising farm to be named Omphalos with an obelisk hewn and erected after the fashion of Egypt and to offer his dutiful yeoman services for the fecundation of any female of what grade of life soever who should there direct to him with the desire of fulfilling the functions of her natural.
As the life of a moth may be indefinitely prolonged whilst its duties are unfulfilled, so the flower of this little mountaineer will remain open through days of fog and sleet, till a mild day facilitates the detachment of the pollen and the fecundation of the ovarium. But here is a plant, or rather flower, more curious than any we have seen.
Cell contents uniform, dense, cell division accompanied by circumscissile debiscence of the parent cell, producing rings on the filaments. Reproduction by zoospores formed of the whole contents of a cell, with a crown of numerous cilia; resting spores formed in sporangial cells after fecundation by ciliated spermatozoids formed in antheridial cells.
As an instance of the latter on Mr. Darwin's part, and a justification of our venture to compare him with the facile princeps botanicorum, we will, in conclusion, allude to the single instance in which they took the same subject in hand. In his papers on the organs and modes of fecundation in Orchideae and Asclepiadeae, Mr.
Upon the irritation caused by a bit of leaf, it will go sometimes through all the visible processes of fecundation, the ovary will swell and ripen, and in due time burst, with every appearance of fertility; but, of course, there is no seed. Beginners, therefore, must not be too sanguine when their bold attempts promise well. From that day Mr.
If it be true that the number of eggs is limited, and that there are not more than from 15 to 20 in each ovary, it is evident that sterility must ensue when these 15 or 20 eggs have been detached without fecundation.
These important early embryonic processes take place so quickly in the Amphioxus that four or five hours after fecundation, or about midnight, the spherical blastula is completed. The wall is at once gut-wall and body-wall. It is composed of two simple cell-layers, the familiar primary germinal layers.
Many of these flowers, both before and after their season of fecundation, erect their heads perpendicular to the horizon, like the Meadia, which cannot be explained from meer mechanism. The Amaryllis formosissima is a flower of the last mentioned kind, and affords an agreeable example of art in the vegetable economy, 1.
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