xvm 



LIST OF ILLUSTRATIONS 



Fig 

 114, 



115 

 116 



117 

 118 

 119 



120, 



122 

 123 



124. 



125. 

 126. 

 127. 

 128. 

 129. 

 130. 



131. 

 132. 



133. 

 134. 



135- 

 136. 



137. 



138. 



139- 



Influence of ovarian transplantation on the teats of the 

 castrated male guinea pig 



A. Normal male . . . . . . . 



B. Feminized male (during lactation) 

 Feminized male guinea pig suckling young 

 Body weight of normal and feminized male rats 

 Body weight of castrated and feminized male rats. 

 Litter of normal guinea pigs, about 7 months old 

 Influence of ovarium transplantation on size of male 



guinea pig ........ 



Influence of testicular transplantation on the clitoris 



of the guinea pig ...... 



Influence of testicular transplantation on size of female 



GUINEA pig ........ 



Feminized cockerel ....... 



A, B, c. Influence of extracts of corpus luteum on the 



UTERUS ........ 



Influence of extracts of corpus luteum on the ovary 

 Artificial ovariotestis in the guinea pig 

 Artificial ovariotestis in the rat .... 



Experimental hermaphroditism in guinea pigs (6 states) 

 Same drawn from nature. ..... 



Section of ovariotestis (see text) .... 



Twins in cattle ....... 



Twins in sheep ....... 



Prostate and seminal vesicles of a eunuchoid of 28 and 



of a normal adult man ..... 

 Testicle and epididymis of eunuchoid of 28 . 

 Diagrams to illustrate how a changed capacity on the 



part of the central nervous system to respond to sex 



hormones interferes with erotization, without the 



hormone production being disturbed 

 pubertas praecox in a boy of three .... 

 x-ray picture of the hand of a girl of 13^ with sexual 



precocity ......... 



Diagram: Origin of the different parts of the male and 



female sex apparatus ...... 



Unilateral underdevelopment of seminal vesicles in case 



of unilateral castration in guinea pig 6^ months old 

 ■142. "Rejuvenation" of senile dog, i8 years old 



Page 



290 

 291 

 292 

 294 

 295 

 296 



296 



301 



304 

 308 



326-7 

 328 

 353 

 354 



360-1 

 362 

 374 

 385 

 386 



. 425 

 426 



429 

 432 



433 



457 



477 

 486-9 



EXPLANATION OF SIGNS. 



cJ = male 

 5 = female 

 j^ = castrated male 

 00 j^ = partially castrated male 

 ^ = castrated female 



t(S = male with transplantation m-^ = masculinized female 



t j^ = castrated male with 

 transplantation 



t ^ = castrated female with 

 transplantation 



fj^- = feminized male 



