90 



MAN AND THE LOWER ANIMALS 



II 



identical with those of the animals immediately 

 below him in the scale : without a doubt, in these 

 respects, he is far nearer the Apes, than the Apes 

 are to the Dog. 



The Human ovum is about r ^ t]l of an inch in 

 diameter, and might be described in the same 



FIG. 15. A. Human ovum (after Kolliker). a. ger- 

 minal vesicle, b. germinal spot. B. A very early condition- 

 of Man, with yelk-sac, allantois and amnion (original). C. A 

 more advanced stage (after Kolliker), compare Fig. 14, C. 



terms as that of the Dog, so that I need only refer 

 to the figure illustrative (15 A) of its structure. 

 It leaves the organ in which it is formed in a simi- 

 lar fashion and enters the organic chamber pre- 

 pared for its reception in the same way, the 

 conditions of its development being in all respects 

 the same. It has not yet been possible (and only 



