l82 



INTERNAL SECRETIONS 



forgotten, that the hormonic effect depends not only upon the 

 quantity of hormone, but also upon the sensitiveness of the 

 substratum; in this case upon that of the central nervous 



Fig, 92. — Section through testicle cut horizontally. (Opera- 

 tion III., Prot. Nr. 76, left testicle) x 280. The testicle 

 was adherent to the abdominal wall. Spermatozoa 

 were not to be found in the epididymis, but there 

 was spermatogenesis in many tubules. Great quantity 

 of hypertrophic interstitial cells between four tubules 

 in complete spermatogenesis. — Prepar. of Wagner; 

 photo of Kull. 



system. No doubt the sensitiveness of certain parts of the 

 latter is much diminished in acute and chronic diseases. 

 It is easy to understand that in such conditions even an in- 

 creased quantity of the hormone will not lead to a normal 



