The evolution of man- a popular exposition of the principal points of human ontogeny and phylogeny (1920) (14760848311)

Identifier: cu31924024561114 (find matches)
Title: The evolution of man: a popular exposition of the principal points of human ontogeny and phylogeny
Year: 1920 (1920s)
Authors: Haeckel, Ernst Heinrich Philipp August, 1834-1919
Subjects: Evolution
Publisher: New York, Appleton
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN



Text Appearing Before Image:
on of the germ-vesicle; Pig. 16, further advanced inversion j Fig. 17, Hood-gaatrula (Anvphigastrula). Fie, 18-24.—Disooidal egg-oleavage of an Osseous fish (Motella T Cottus f).The greater part of the nutritive yelk (n) is omitted. (Of. Fig. 42, 43, pp.217, 219.) Fig. 18, parent-ceU (Cytula) j Fig. 18, cleavage stage with2 cells i Fig. 20, cleavage-stage with 32 cells; Fig. 21, mnlberry-genii(Morula) ; Fig. 22, germ-vesicle (Blastula); Fig. 23, the same, in prooesg ofinversion ; Fig. 24, Disc-gastrula (Discogastrula). Pio. 25-30.—Superficial egg-oleavage of a Crab (Peneus). Pig. 25,parent-oeU (Cytula) ; Fig. 26, cleavage-stage with 4 oells ; Pig. 27, oleavage-■tage with 82 cells; Fig. 28, mulberry-germ (Morula), and at the sametime the germ-vesicle (Blastula) ; Fig. 29, Bladder-gastmla (,Periga,strula);Fig. 30, !Nauplins-germ; the pharynx-cavity has formed in front of thaprimitive month (d), owing to an invenion from without.. HAiiCKIibs EVOLUTION OF MAN. FLA TE a GASTRULATION.
Text Appearing After Image:
Amphioxus Frut;. Man. nAHLKIfL. S KVOLUIIOJ OF MAN, GASTRULATION. FLATE III