Modification of Germinal Constitution of Organisms 151 



YOUNG (J PURE BLACK LINE AND SOURCE 

 or TRANSPLANTED OVARIES IN Q No 27 



O DIED AND THEIR BLACK COAT- 

 ED FOETUSES WERE REMOVED 

 FROM HER UTERUS 



Fig. 58. — To show the lack of effect of foster soma upon introduced ova. 

 (ilodified from Castle.) See text for further discussion of this figure. 



