70 THE SEX-COMPLEX 



experiments I was unable to detect any alteration from 

 the normal in any part of the suprarenal s in these 

 circumstances. 



EFFECTS OF REMOVAL OF THE PARS POSTERIOR ON THE 

 OVARIES AND UTERUS 



Effects of Neither complete nor partial removal of the posterior 



removal of . -- , . , m/ 



the pars lobe m any way affects the genital organs. The uterus 



^genitalia. an( * ovaries continue their development normally in 



accordance with the age and growth of the animal 



concerned (fig. 32). 



EFFECTS OF REMOVAL OF THE PARS POSTERIOR ON THE 

 OTHER HORMONOPOIETIC ORGANS 



Effects of I W as unable to discover any changes in the other 



removal of . . . * r 



the pars organs of internal secretion after removal of the posterior 



other^rgans. ^°^ e °^ * ne pituitary, unless it be that there was an 



increase of colloid in the thyroid ; but, as already 



mentioned, it is difficult accurately to estimate a slight 



alteration from the normal in this respect. 



EFFECTS OF SEPARATION AND COMPRESSION OF THE IN- 

 FUNDIBULAR STALK ON THE OVARIES AND UTERUS 



Effects of As might be expected, I found that this procedure 



compressron' causes intense atrophy of the uterus and ovaries — an 

 of stalk on atrophy which appeared to be even more marked than 



the genitalia. 



that produced by the removal of a portion of the anterior 

 lobe (figs. 33 and 34). The histological changes were 

 identical with those already mentioned as occurring 

 after partial removal of the anterior lobe (figs. 30 and 31). 



EFFECTS OF SEPARATION OR COMPRESSION OF THE INFUN- 

 DIBULAR STALK ON THE OTHER HORMONOPOIETIC ORGANS 



The only change which stood out prominently was in 

 connexion with the thyroid. In all cases in which this 



