Page:Descent of Man 1875.djvu/26

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Part I.
The Descent of Man.


Fig. 1. Upper figure human embryo, from Ecker. Lower figure that of a dog, from Bischoff.

a. Fore-brain, cerebral hemispheres, &c.
b. Mid-brain, corpora quadrigemina.
c. Hind-brain, cerebellum, medulla oblongata.
d. Eye.
e. Ear.
f. First visceral arch.

g. Second visceral arch.
H. Vertebral columns and muscles process of development.

i. Anterior \scriptstyle{


\ \\ \ 

\right\}\, } extremities
K. Posterior

L. Tail or os coccyx.