312 Proceedings of the Royal Physical Society. 



more especially in the parts corresponding to the body and 

 fundus. Such appears to be also the case in the chimpanzee. 

 Thus Wyman ^ found the uterus of an adult chimpanzee to 

 be 2|- inches long, while my specimen, which had cut its first 

 permanent molars, had a uterus less than an inch in length, 

 and the general relation of its parts were purely infantile in 

 their character. 



The ovaries and Fallopian tubes presented no peculiarity 

 worthy of notice. 



Some of the special features of the female genitals of the 

 chimpanzee, such as the large size of the clitoris, the promi- 

 nence of the labia minora, and the direction of the urethra 

 and vagina, will be found to some extent in the human 

 fcetus. Even, however, by the fourth or fifth month the 

 lower parts of the vagina and urethra will be found to be 

 directed somewhat forwards as well as downwards, and 

 before birth the clitoris and nymphse have acquired their 

 adult relations to the labia majora. A few months after 

 birth, the direction of the vagina is practically the same as 

 in the adult. On the other hand, from a cursory inspection 

 of the external genitals of the adult female chimpanzee 

 " Sally " in the Zoological Gardens of London, I am inclined 

 to believe that the relation of the structures at the pelvic 

 outlet represented in Fig. 2 will be found to persist in the 

 adult. 



There can be little doubt as to the correctness of the 

 opinion of Blunienbach and Cuvier that the anthropoid apes 

 copulate a i^osteriori. Quite a number of peculiarities in the 

 anatomy of the chimpanzee, as compared with the human 

 subject, exist, which must facilitate copulation a jJosteriori, ot 

 obstruct its performance ah anteriori. These peculiarities in 

 the chimpanzee are the marked obliquity of the pelvis, the 

 feeble development of the buttocks, the rudimentary condi- 

 tion of the mons Veneris, the large size and the position of 

 the clitoris, and the direction of the vulvo-vaginal and 

 vaginal canals. 



^ Boston Journal of Natural Ilistorj', vol. iv,, p. 380. 



