504 V. D. LESPINASSE 



a successful h&mo transplant is still a question subject to dispute. Person- 

 ally, I believe that if we really have a successful take that they will live 

 indefinitely. If one does not have a take, the interstitial cells degenerate 

 within a few months. In auto transplants, the same phenomena occur 



Fig. 13. Low power photomicrograph of the testicle of a dog 3 months after the 

 operation of testicle transplantation ; note the degeneration of the spermatogenic tubules 

 and the preservation of the interstitial tissue. 



as in the homo transplants. The only difference is that there is a larger 

 percentage of takes. 



Excessive Testicular Hormonic Action 

 Premature Puberty 



An early puberty is occasionally observed clinically, coming on at any 

 age from birth to the normal time of development of puberty. Upon 

 analysis, these cases can be classified into four groups; adrenal cortex 

 tumor, testicular tumor, hyperfunction of these structures without tumor, 

 or pineal gland tumor. In the pineal gland tumor cases the patients have 

 in addition to the excessive development of the sex organs, the symptoms 

 due to pressure of the pineal gland tumor upon the brain. From a clinical 

 urological standpoint, these cases have little interest. Adrenal cortex 

 tumor as a cause of precocious puberty is relatively common, more com- 

 mon in girls than in boys. The diagnosis can be made by palpation of the 



