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BENJAMIN H. WILLIER 



the gonad which is most transformed in the male direction. 

 In cases H-46 and 44 they are less numerous than in H-37, but 

 more numerous than in less transformed gonads. Obviously, 

 there exists a graded series in the development of the straight 



Fig. 14 Rete tubules from testis of a young male calf (six months?), Bos 12. 

 I, lumen of tubule; re, epithelium of tubule; rs, connective tissue stroma between 

 rete tubules. X 307. 



tubules, the moderately transformed gonads having a few, and 

 the most completely transformed gonads having many. 



The epididymis. Each of the three gonads of this group 

 possesses a well-developed epididymis, which marks a pro- 

 nounced step in the direction toward male organization of the 

 free-martin gonad. Although the epididymis bears a relation 

 to the reproductive gland, w^hich is approximately normal, its 



