1330 BIOLOGICAL EFFECTS OF RADIATION 



95. Wyckoff, R. W. G., and B. J. Luyet. The effects of X-rays, cathode, and ultra- 

 violet rays on yeast. Jour. Radiol. 17: 3-7. 1931. 



96. Wyckoff, R. W. G., and T. M. Rivers. The effect of cathode rays upon certain 

 bacteria. Jour. Exp. Med. 51 : 921-932. 1930. 



97. ZuppiNGER, A. Radiobiologische Untersuchungen an Ascariseiern. Strahlen- 

 therapie 28 : 639-758. 1928. 



Manuscript received by the editor July, 1934. 



