The evolution of man: a popular exposition of the principal points of human ontogeny and phylogenyFrom the German of Ernst Haeckel . ?// t n. tn n s- /> J W^^^^Y . ^f ti * 8 Fig. 236. 0 Fig. 235. Figs. 232, 233.—Head of an embryonic Chick, on the third day ofincubation : 232, from the front; 233, from the right side, w. Nose-rudi-ment (olfactory grooves) ; I, eye-rudiment (sight-grooves); gr, ear-rudiment(auditory grooves); t% fore-brain; gl, eye-slits; o, upper jaw process; w,lower jaw process of the first gill arch. Fig. 234.—Head of an embryonic Chick, on the fourth day of incubation,fro
The evolution of man: a popular exposition of the principal points of human ontogeny and phylogenyFrom the German of Ernst Haeckel . ?// t n. tn n s- /> J W^^^^Y . ^f ti * 8 Fig. 236. 0 Fig. 235. Figs. 232, 233.—Head of an embryonic Chick, on the third day ofincubation : 232, from the front; 233, from the right side, w. Nose-rudi-ment (olfactory grooves) ; I, eye-rudiment (sight-grooves); gr, ear-rudiment(auditory grooves); t% fore-brain; gl, eye-slits; o, upper jaw process; w,lower jaw process of the first gill arch. Fig. 234.—Head of an embryonic Chick, on the fourth day of incubation,from below: w, nose-groove ; o, upper jaw process of the first gill arch ;!/, lower jaw process of the sauie ; k, second gill-arch; sp, choroidal fissureof the eye ; s, throat (pharynx). Figs. 235, 236.—Two heads of embryonic Chicks : 235, at the end of thefourth day; 236, at the end of the fifth day of incubation. The letters as inFig. 234. Additional letters are in, inner, and an, outer nasal process ; i)/,nasal furrow ; at, frontal process ; w, mouth-cavity. (After Koelliker.) All these figures are proportionately enlarged. 244 ^
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Keywords: ., bookcentury1800, booksubjectembryology, booksubjectembryologyhum
