338 AN EMBRYOLOGIST'S VIEW 



Moore, J. A. 1947. Hybridization between Rana pipiens from Vermont 

 and eastern Mexico. Proc. Natl. Acad. Sci. U.S., 33, 72-75. 



Moore, J. A. 1949a. Geographic variation of adaptive characters in 

 Rana pipiens Schreber. Evolution, 3, 1-24. 



Moore, J. A. 1949b. Patterns of evolution in the genus Rana. In Ge- 

 netics, Paleontology, and Evolution. G. L. Jespen, G. G. Simpson, 

 and E. Mayr, editors. Princeton University Press, Princeton, New 

 Jersey. 



Moore, J. A. 1950. Further studies on Rana pipiens racial hybrids. 

 Am. Naturalist, 84, 247-54. 



Moore, J. A. 1954. Geographic and genetic isolation in Australian am- 

 phibia. Am. Naturalist, 88, 65-74. 



Moore, J. A. 1955. Abnormal combinations of nuclear and cytoplasmic 

 systems in frogs and toads. Advances in Genetics, 7, 139-82. 



Volpe, G. P. 1955. Intensity of reproductive isolation between sym- 

 patic and allopatric populations of Rufo americanus and Rufo 

 foivleri. Am. Naturalist, 89, 303-18. 



