Trans. Roy. Soc. Edin. 
Vol. LII. 
Professor Arthur Robinson: “The Formation, Rupture, and Closure of Ovarian Follicles in Ferrets and Ferret-Polecat 
Hybrids, and some Associated Phenomena.” — Plate III. 
B.o.c. 
Fig. 16. 
C.r. 
01 . 
0. 
Nl. 
C.t.o. C.o. 
Fig. 19. 
