PLATE 9 



EXPLANATION OF FIGURES 



29 Embryo no. 17-1, modified by ovary graft. X 3. 



30 Diagram of the urinogenital system of the same embryo. 



31 Embryo no. 17-5, modified by ovary graft. X 3. 



32 Embryo no. lS-9, modified by ovary graft. X 3. 



58 



