350 RADIATION BIOLOGY 



(1940) The radiobiological importance of the energy distribution along 



ionization tracks. J. Cellular Comp. Physiol., 16: 221-235. 



(1950) Radiobiological additivity of various ionizing radiations. Am. J. 



Roentgenol. Radium Therapy, 63: 170-175. 



(1952) Speculations on cellular actions of radiations, in Symposium on 



radiobiology (Oberlin, 1950), ed. J. J. Nickson. John Wiley & Sons, Inc., New 

 York. 



, P. C. Aebersold, and E. R. Dempster (1937) The relative biological effec- 

 tiveness of fast neutrons and X rays upon different organisms. Am. J. Cancer, 

 29: 556-562. 



and I. Lampe (1938) Differences in the relative action of neutrons and roent- 

 gen rays on closely related tissues. Am. J. Roentgenol. Radium Therapy, 39. 

 613-627. 



, Dorothy F. Marchbank, and Kathryn D. Kuck (1952) Exponential and sig- 

 moid survival curves resulting from alpha and X irradiation of Aspergillus spores. 

 J. Cellular Comp. Physiol., 39 (Suppl. 1): 75-85. 



and Mary E. Parrish (1950) Comparative lethal action of X rays and cyclo- 

 tron neutrons on Drosophila eggs. USAEC Report CH-3904.* To appear in 

 National Nuclear Energy Series, Div. IV, Vol. 22D. 



, J. R. Raper, E. F. Riley, Jr., and G. E. Stapleton (1945) Additivity of fast 



neutrons and gamma rays in their acute lethal action on mice. USAEC Report 

 MDDC-2328.* To appear in National Nuclear Energy Series, Div. IV, Vol. 

 22D. 



and C. A. Tobias (1953) Effects of ploidy and linear energy transfer on radio- 

 biological survival curves. In press, Arch. Biochem. and Biophys. 



Manuscript received by the editor Sept. 4, 1951 



