XV111 



LIST OF ILLUSTRATIONS 



FIGITBK 



12. Normal skadows in the infant . . 417 



13. Before treatment 419 



14. After treatment with radium ........* 420 



SECTION IV 

 THE KALE GONADS AND THEIR DISEASES 



Anatomy, Embryology, Comparative Anatomy, and Histology of the 

 Endocrine Components of the Testis 



E. V. COWDRY 



1. Groups of interstitial cells in human testis closely associated with a 



blood vessel 424 



2. Interstitial cells of testis of opossum showing secretion within the 



cells, in the intercellular spaces and in the capillaries 426 



3. Interstitial cells in the testes of the opossum, showing the range of 



variation in the structure of the Golgi apparatus 427 



Physiology, Physiological Chemistry and Experimental Pathology of the 



Testis 



HOMER WHEELON 



1. Ovaries of Lymantria (Porthetria) dispar transplanted to male . . 433 



2. Photograph of guinea pigs showing the effects of "ferminization" on 



somatic development 437 



3. Photograph of guinea pigs showing the effects of "masculinization" 



on somatic development 438 



4. Section of cryptorchid pig testicle showing the interstitial cells sur- 



rounding a capillary 444 



5. Section of normal pig testicle in active spermatogenesis 445 



6. Section of cryptorchid pig testis, stained with Sedan III and hema- 



toxylin . 445 



7. Photograph of the urogenital apparatus of an adult castrated pig . . 446 



8. The urogenital organs of a normal pig 447 



9. The urogenital organs of a moncryptorchid pig (the other testicle had 



descended normally and had been removed) . . 448 



10. Reproductive organs of fertile free-martin 23.3 cm. long x 4/3 ... 450 



11. Urogenital system of sterile free-martin 27 cm. long x 4/3 .... 451 



12. Normal male 26 cm. long; from twin one-sex paid 452 



13. Vasomotor reactions of dog to 1 c.c. of 1 :2,000 solution of nicotin . . 458 



14. Drawing to show the degree of encapsulation and peripheral vascular- 



ization of a testicular transplant among the shoulder muscles of a 

 normal female white rat 24 weeks after placement 468 



Pathological Anatomy and Histology of the Testicle 

 DAVID M. DAVIS 



1. Interstitial cell hypertrophy, low power 474 



2. Interstitial cell hypertrophy, high power .... 475 



