254 HELEN DEAN KING. 



no further use after the eggs pass into the body cavity. 

 They therefore undergo rapid degeneration and absorption to 

 make room for the young eggs that are in the process of devel- 

 opment. 



LITERATURE. 

 Brandt, Alexander 



1 Fragmentarische Bemerkungen ueber das Ovarium des Frosches. Zeitschr. f. 



wiss. Zool., Bd XXVIII., 1876. 



King, Helen Dean 



2 The Maturation and Fertilization of the Egg of Bufo lentiginosus. Journ. 



Morph., Vol. XVII., 1901. 



Lereboullet, A. 



3 Recherches s. F Anatomic des Organes genitaux d. animaux vertebres. Nova 



Acta Acad. Leop. Car., t. XXIII. , 1851. 



Rathke, H. 



4 Beitrage zur Geschichte der Thiervvelt III. Neueste Schr. d. Naturf. Ges. in 



Danzig, Bd. I., 1825. 



Schultze, 0. 



5 Untersuchungen iiber die Reifung und Befruchtung des Amphibieneies. 



Zeitschr. f. wiss. Zool., Bd. XLV., 1887. 



Swammerdam, J. 



6 Biblia Naturre. ~Leyd.se, 1738. Trans, by Thos. Flloyd, London, 1758. 



Thompson, Allen 



7 Ovum. Todd's Cyclopaedia of Anatomy and Physiology, Vol. V., 1859. 



