46 



REPRODUCTIVE SYSTEM OF THE ADULT FROG 



i/.m. 



Small ovarian egg of the frog surrounded by its follicle (/.) and theca {th.), 

 which is continued into the pedicle (p.). {h.v.) A blood vessel between follicle 

 and theca. (v.m.) Vitelline membrane, (c/z.) Chromatin filaments, now achro- 

 matic. («.) Chromatic nucleoli, ejected from the nucleus (n'.) and becoming 

 achromatic (/!".). (Courtesy, Jenkinson: "Vertebrate Embryology," Oxford, The 

 Clarendon Press.) 



Section of a mature ovarian egg to show the area of ultimate follicular rupture 

 and the surrounding membranes of the egg. 



