Eben C. Hill 451 
The entrance of the testis into the internal ring occurs between the 
sizes of one hundred and ninety and two hundred and twenty mm. The 
left gland usually enters the internal ring first, and in Fig. 5 (210 mm.) 
Fic. 5. A transparent specimen of the right testis of an embryo pig 210 
mm. in length. The relation of this gland to the other organs was obtained 
from a fresh tissue specimen of an embryo of the same size. xX 6. In this 
figure the left testis is seen to have nearly passed the internal ring, while 
the right sex gland has just entered. K., right kidney; A., dorsal aorta; Z£., 
epididymis; U., ureter; R., rectum; M. D., W. D., Miillerian and Wolffian 
ducts; U. A., umbilical artery; B., bladder; 7., testis, 6 mm. in length. 
only the globus major of the epididymis is apparent. The capsular 
artery has sent out branches which nearly encircle the sex gland, and 
