602 Gideon S. Dodds. 



EXPLANATION OF FIGURES 



10. Cross section of embryo of stage 13. X 110. 



11. Cross section of embryo of stage 14. X 110. 



12. Outline sketch of right side of embryo of stage 6 as viewed from above. X46. 



13. Outline sketch of embryo of stage 7, showing number and distribution of 

 germ-cells. X 45. 



