. The cat; an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 142.—Longitudinal Section through the Axis OF the Ovum, in which the Epiblastic Cells (c) have almost surrounded the Hypobla-stic ones ((')• il. Central cell. 0. HypoWastic cell, occupying the interspace left at one point by the epiblastic FiK. 14n. A. Commencing separation between the epi- blastic anil cells. e. EpiWast. i. HyiKiMast. Ic. Cavity f'lpniicil by the separation. B. Comi>letion of the process, and formation of a {reriu area, ov >;astro-ilis
. The cat; an introduction to the study of backboned animals, especially mammals. Cats; Anatomy, Comparative. Fig. 142.—Longitudinal Section through the Axis OF the Ovum, in which the Epiblastic Cells (c) have almost surrounded the Hypobla-stic ones ((')• il. Central cell. 0. HypoWastic cell, occupying the interspace left at one point by the epiblastic FiK. 14n. A. Commencing separation between the epi- blastic anil cells. e. EpiWast. i. HyiKiMast. Ic. Cavity f'lpniicil by the separation. B. Comi>letion of the process, and formation of a {reriu area, ov >;astro-ilisc, of two layers— one (f) (if epiblastic cells, tlie other (i) of hypiihlastic cells. OF THE EMiniYo. The first indication of the embryo is the appear- ance of a longitudinal depression or furrow, termed the mednUary (jroore (Fig. 145), and it is the sign of the appearance of the most important and central of all the organs of the future animal, for in * In a papor read before tlio Eoyal Society on March 23, 1876, Mr. E. A. Scliiifcr describes tlie forinatiou of a membrane in the cat's ovum between the epiblast and liypoblast. This mem- branous follicle he named, mcmhrana Umitaiis TiypohlaMica. The fact of its ]»rescuco favours the view according to which the mesoblast is derived from the See Tro. Koy. Soc, vol xxiv., plate 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 Mivart, St. George Jackson, 1827-1900. London, Murray
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectanatomy, bookyear1881
