ACTION OF SEX HORMONES IN FOETAL LIFE 



441 



20B 



20A 



Figs. 20A and 20B Urinogenital system of sterile free-martin 2L5 cm. long. 

 From two-sexed pair 2. 



20A. X J. On the right side the gubernaculum, instead of growing into 

 the body wall has evaginated into the body cavity and lies partly in the utero- 

 rectal recess. Both Wolffian and Miillerian ducts appear to be present ; latter 

 very rudimentary. Gonads very small. 1, gonad; £, gubernaculum, left side; 

 3, umbilical artery; 4, Wolffian duct; 5, ureter; 6, Miillerian duct; 7, urinogenital 

 sinus; 8, gubernaculum of right side evaginated into body cavity; 9, allantois. 



20B. X f. Part of 20A with the right gubernaculum withdrawn from the 

 utero-rectal recess and turned over to expose the gonad and Wolffian duct. 

 1, gonad; 2, Wolffian duct; 3, Miillerian duct; 4. gubernaculum. 



