. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. ^-Jm Ek Fig. 102, a, J.—Parts of the ovum of Asterias glacialis -n-ith spermatozoa, embedded in the mucilarjinous coat (after H. Fol.) c, upper part of the ovum of Potromyzon (after Calberla). Am, micropyle ; Sp, spermatozoa; Jm, path of the spermatozoon; Ek, female pronucleus; Eh, membrane of ovum ; Ehz, prominences of the snme. and a new nucleus was formed quite independently of it; and that the persistence and the participation of the germinal vesicle in the for- mation of the nuclei of the first
. Elementary text-book of zoology, general part and special part: protozoa to insecta. Animals. ^-Jm Ek Fig. 102, a, J.—Parts of the ovum of Asterias glacialis -n-ith spermatozoa, embedded in the mucilarjinous coat (after H. Fol.) c, upper part of the ovum of Potromyzon (after Calberla). Am, micropyle ; Sp, spermatozoa; Jm, path of the spermatozoon; Ek, female pronucleus; Eh, membrane of ovum ; Ehz, prominences of the snme. and a new nucleus was formed quite independently of it; and that the persistence and the participation of the germinal vesicle in the for- mation of the nuclei of the first segmentation .spheres were exceptional (Siphonophora, Entoconcha, etc.) Thorough investigations carried out on the eggs of numerous animals have, however, shown that as a matter of fact the germinal vesicle of the ripe ovum only experi- ences changes in which the greater part of it, together with some of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Metcalf Collection (North Carolina State University). NCRS. London, Swan Sonnenschein
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectanimals, bookyear1892
