OVARY AS ORGAN OF INTERNAL SECRETION 71 



the effects of complete gonadectomy. The same probably 

 applies to the assumption of male characters which may 

 happen in mammals when the ovary is interfered with by 



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o 











V'^ri'h''''y^& 



■:f. 



W 



M0y^' 



Fig. 36. — Normal Uterus of Rat. 

 (From ^larshall and Jolly.) 



malignant growth, or bacterial action, or at the menopause. 

 Complete gonadectomy of the female mammal does not lead to 

 the assumption of male secondary characters. 



Effects on secondary characters. As indicated above, owing to 

 the negative nature of the female secondary sexual characters, 

 the superficial effects of ovariectomy are not as obvious as those 



