PLATE 9 



EXPLANATION OF FIGURES 



28 A higher magnification of another corpus luteum from the same ovary as 

 figure 27. The ingrowth of the peripheral vessels is more apparent, hv, blood 

 vessels. 



29 A fully developed corpus luteum from animal 1074 9 , killed four and one- 

 half days after oestrus. The typical glandular structure is clearly shown, 

 cords of cells surrounded by capillaries, cap, capillaries. A section of the wall 

 of the resting uterus from the same animal is given in figure 10. 



2S2 



