430 



FRANK R. LILLIE 



Fig. 8 Case 8. Reproductive organs of fertile free-martin 23.3 cm. long. 

 X *. The chorion of the twins was single with a narrow connection between the 

 two halves. Presumably no vascular anastomosis. The male was 26..5 cm. long, 

 nearly 80 per cent heavier than the female, and its skin was unpigmented, whereas 

 the female was darkly pigmented. 1, ovary; 2, left horn of uterus; 3, round liga- 

 ment; 4, vagina; 5, clitoris; 6, neck of allantois. 



