108 Blair Bell 



Combined Partial Anterior and Posterior Lobe Removals. — In 

 both the eases of this experiment (Table VII.) large portions of the pars 

 posterior and small amounts of the pars anterior (tig. 34) were removed. 

 In neither case were any symptoms or post-mortem appearances noted 

 whicli could be ascribed to the operation. Both animals put on weight, 

 bitcli No. 17 becoming rather fat; this animal, moreover, came on heat 



Fig. 34. — Section sliowing portion of the pars jiosterior (on 

 tlic right) and a small ])oition of the pars anterior (on 

 the left) removed from dog 17. (Photomicrograph x 15.) 



and had coitus, but did not become pregnant. The genitalia continued to 

 develop, and no changes were noted in the other endocrine organs. 



Clamping and Separation of the Stalk. 



The details of these operations are shown in Table VIII. The results 

 which they produce are probably identical, although it is possible that 

 absolute severance of the stalk may produce more sudden and lasting 

 effects than clamping. 



These experiments, as I shall point out more fully when discussing the 

 results obtained by other workers, are of considerable interest, for in all 

 three cases there was an increase in weight, and in two (Nos. 14 and 12) 

 the condition of dystrophia adiposo-genitalis was produced. By no 

 other operation was I able to obtain this result. 



In figs. 3.5a and 35b dog No. 14 is shown before and after operation, and 

 in figs. 36a and 36b dog No. 12, before and after operation. In the second 

 case, especially, an extreme condition of adiposity is to be seen : the body 



