Proc. Roy. Soc. Edin. 
[Vol, XXXI. 
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Fig. 10. 
Interstitial Cells in Central Portion of Cortical Zone of 
New-born Puppy’s Ovary. 
<S3>“ ! * c - 
Fig. 12. 
Schematic Drawing of Cortex of •< Ovary of 
New-born Puppy. 
x 1000 Diam. 
Fig. 11. 
Mitosis occurring in Oocytes of first stage. 
Dr Louise M c Ilroy. 
x 800 Diam. 
Fig. 13. 
From Surface of Ovary of three months’ old Puppy. 
The capsular epithelium is cut obliquely. The 
gland-like spaces are seen. 
[Plate III. 
