Stutlios oil the Endocriiu- (iland.s 



.S-27 



appearance su^ije.stive of degeneration, their outlines bein<ij in many cases 

 indistinct. Tlie oxyphil cells are lartje and plentiful. Their nuclei generally 

 are enlarged, but not markedly. A few vesicles are to be seen containing 

 hyaline substance. 



The i)ars intermedia is thickened as compared with the normal. Its 

 cells are somewhat swollen. The cytoplasm is vacuolated and the nuclei 





Fig. 7. — Section of pituitary body of paratliyioidectomised male rat fed with addition to its 

 ordinary food of 1 grni. of dry ox-thyroid per diem during seven days. Micro- 

 photogr;ii)h ; magnified 90 diameters. Hrematoxylin-eosin preparation. 



The section shows an accumulation of hyaline substance in the intraglandular cleft. 

 o, pars anterior ; 6, pars intermedia ; c, pars nervosa ; d, coIUiid in cleft. 



enlarged, measuring from 7'5/a to 11/a in diameter. The pars intermedia 

 contains a few vesicles tilled with hyaline substance. 



The masses of hyaline substance in the pars nervosa do not appear 

 to be increased in amount. 



Table I. shows the weights of the pituitaries of four castrated male 

 rats as compared with two controls. Three other controls are furnished 

 in Table II. 



Tablk I. — Weight op Pituit.vry Body after Castration. 



