THE DESCENT OR ORIGIN OF MAN 



27 



Wolffiana, correspond with and act like the kidneys of ma- 

 ture fishes." Even at a later embryonic period, some strik- 

 ing resemblances between man and the lower animals may 



4 





Fio. 1.— Uppep figure human embryo, from Ecker. Lower figure that of a dog, 

 &om Bischon. a. Fore-hrain, cerebral hemispheres, etc. ^6. Mid-brain, corpora 

 guadrigemina. c. Hind-brain, cerebellum, medulla oblongata, d. Eye. e. Ear. /. 

 First visceral arch. g. Second visceral arch. H. Vertebral columns and muscles 

 in process of development, i. Anterior extremities. E. Posterior eztr«Riiitiea. !«> 

 TaU or OS coccyx. 



" Owen, "Anatomy of Vertebrates," vol. i. p. 533. 



