126 University of California Publications in Zoology (Vou.9 
LITERATURE CITED 
Lone, J. A., AND Mark, E. L. 
1911. The maturation of the egg of the mouse. Publications of the 
Carnegie Institution of Washington, no. 142, 72 pp., 6 pls. 
Mark, E. L., anp Lone, J. A. 
1911. Die Reifung der Hier der Maus. Verh. d 8.. Intern, Zool. Kong., 
Graz, Aug. 1910. 
Mast, 8. O. 
1907. 
A simple electrie regulator, Science, n.s. 26, 554. 
