916 BIOLOGICAL EFFECTS OF RADIATION 



131. Nadson, G. a. Sur I'accel^ration du tempo de la vie et la vieillissement pre- 

 mature chez les organismes inferieurs sous I'influence des rayons X et du radium. 

 Compt. Rend. Soc. Biol. [Paris] 93: 1585-1586. 1925. 



132. Nadson, G. A. tJber die Primarwirkung der Radiumstrahlen auf die lebendige 

 Substanz. Biochem. Zeitsch. 155 : 381-386. 1925. 



133. Nadsox, G. a., and G. S. Philippov. Influence des rayons X sur la sexualite et 

 la formation des mutantes chez les Champignons inferieurs (Mucorinees). 

 Compt. Rend. Soc. Biol. [Paris] 93: 473-475. 1925. 



134. Nadson, G. A., and G. S. Philippov. Action excitante des rayons ultra-violets 

 sur le developpement des levures et des moisissures. Compt. Rend. Soc. Biol. 

 [Paris] 98 : 366-368. 1928. 



135. Nadson, G., and E. J. Rochlin. IJber Radiumheferassen. Arch. Mikrobiol. 

 4: 189-208. 1933. 



136. Nadson, G. A., and A. J. Zolkevic. Kalium als Antagonist der Rontgen- 

 strahlen und des Radiums. Biochem. Zeitsch. 163: 457-463. 1923. 



137. Neidhart. Beitrag sur Strahlenempfindlichkeit pathogener Hautpilze (Sporo- 

 trichum Beurmanni und Trichophyton gypseum). Inaug. Diss. Ziirich. 

 (Strahlentherapie 17: 551. 1924 Abst.) 



138. Oehlkers, F. Phototropische Untersuchungen an Phycomyces nitens. 

 Zeitsch. Bot. 19: 1-44. 1927. 



139. OsTER, R. H. Results of irradiating Saccharomyces with monochromatic 

 ultra-violet light. I. Morphological and respiratory changes. Jour. Gen. 

 Physiol. 18 : 71-88. 1934. 



140. OsTER, R. H. Results of irradiating Saccharomyces with monochromatic 

 ultra-violet light. II. The influence of modifying factors. Jour. Gen. Physiol. 

 18:243-250. 1934. 



141. OsTER, R. H. Results of irradiating Saccharomyces with monochromatic ultra- 

 violet light. III. The absorption of ultra-violet energy by yeast. Jour. Gen. 

 Physiol. 18 : 251-254. 1934. 



142. OsTER, R. H., and W. A. Arnold. Results of irradiating Saccharomyces with 

 monochromatic ultra-violet light. IV. Relation of energj' to observed inhibitory 

 effects. Jour. Gen. Physiol. 18: 351-355. 1935. 



143. Owen, W. L., and R. L. Mobley. The effect of ultra violet rays upon the fer- 

 mentation efficiency of yeast in the alcoholic fermentation of molasses. Cen- 

 tralbl. Bakt. 2 Abt. 88: 273-286. 1933. 



144. Petri, L. Influenza di substrati nutritivi esposti ai raggi ultravioletti sopra 

 lo sviluppo dei funghi. Boll. R. Patol. Veg. 9: 408-410. 1929. 



145. Pfeffer, W. The physiology of plants. Edited and translated by A. J. 

 Ewart. Clarendon; Oxford, 1900. 



146. Pichler, F., and A. Wober. Bestrahlungsversuche mit ultraviolettem Licht, 

 Rontgenstrahlen und Radium zur Bekampfung von Pflanzenkrankheiten. 

 Centralbl. Bakt. 2. Abt. 57: 319-327. 1922. 



147. Porter, C. L., and H. W. Bockstahler. Concerning the reaction of certain 

 fimgi to various wave lengths of light. Proc. Indiana Acad. Sci. 38: 133-135. 

 1928. 



148. Potts, G. Zur Physiologie des Dictyostelium mucoroides. Flora 91: 281-347. 

 1902. 



149. Prescott, S. C. The effect of radium rays on the colon bacillus, the diphtheria 

 bacillus and j-east. Science 20 : 246-248. 1904. 



150. Purvis, J. E., and G. R. Warwick. The influence of spectral colors on the 

 sporulation of Saccharomyces. Proc. Cambridge Phil. Soc. 14: 30-40. 1907. 



151. Rabinovitz-Sereni, D. II grado di resistenza di alcuni funghi all'azione dei 

 raggi ultra-violetti. Boll. R. Staz. Patol. Veg. 12: 115-144. 1932. 



