GENETIC TYPE AND THE ENDOCRINES 



463 



PLATE 89 



Boston terrier-dachshund cross. Differences in pituitary and thyroid structure in two 

 strongly contrasted second generation hybrids, together with pituitary histological pattern in 

 two second generation hybrids of intermediate type. 



3 1523 <$ thyroid. 



1 1523 $ pituitary. 



2 355 <j> pituitary. 



4 355$ thyroid. 



5 294 $ pituitary 

 b* 722 rf pituitary 



