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 extremities
K. Posterior

L. Tail or os coccyx.