Fig. 2 



Fig. 3 



Fig. 4 



Fig. 5 



Fig. 6 



Fig. 7 



Results of ovarian transplantation in guinea-pigs. Ovaries from a small black guinea-pig (Fig. •i) 

 ivere transplanted into an albino (Fig. 3) which, mated with another albino (Fig. 4), produced black 

 young (Figs. 5-7). 



