EFFECTS OF RADIATION ON BACTEUIA 423 



Coblentz, W. \V., and H. 11. Fulton (1924) A radionictric investigation of the 

 germicidal action of ultra-violet radiation. Xatl. iiur. Standards U.S., Sci. 

 Technol. Papers (495) 19: (i41-()80. 



Croland, R. (1948) Action des rayons X sur la fr('(|U('uc(' d'uiH' tuutatinn Ijacti'riciiiic. 

 Conipt. rend., 216: 610 618. 



Crowther, J. A. (1924) Some considerations relative to the action of X rays on tissue 

 cells. Proc. Roy. Soc. London, B90: 207-211. 



(1926) The action of X rays on ColpidiiiDi colpoda. Proc. Roy. Soc. London, 



BlOO: 390-404. 



Curran, H. R., and F. R. Evans (1938) Sensitizing bacterial spores to heat by expos- 

 ing them to ultraviolet light. J. Bacteriol., 36: 455-465. 



Dale, W. M. (1940) The effect of X rays on enzymes. Biochem. J., 34: 1367-1373. 



(1942) The effect of X rays on the conjugated protein d-amino-acid oxidase. 



Biochem. J., 36: 80-85. 



Delaporte, B. (1949) Cytology of bacteria. Carnegie Inst. Wash. Year Book No. 



48, 166-170. 

 Demerec, M. (1946) Induced mutations and possible mechanisms of the transmission 



of heredity in Escherichia coli. Proc. Natl. Acad. Sci. U.S., 32: 36-46. 



(1949) The gene. Carnegie Inst. Wash. Year Book No. 48, 154-166. 



(1951) Studies on the streptomycin-resistance system of mutations in E. coli. 



Genetics, 36: 585-597. 



Demerec, M., G. Bertani, and J. Flint (1951) A survey of chemicals for mutagenic 

 action of E. coli. Am. X'^aturalist, 85: 119-136. 



Demerec, M., E. J. DoUinger, and J. Flint (1951) Delayed expression of mutations. 

 Carnegie Inst. Wash. Year Book No. 50, 183-184. 



Demerec, M., and R. Latarjet (1946) Mutations in bacteria induced by radiations. 

 Cold Spring Harbor Symposia Quant. Biol., 11: 38-49. 



Demerec, M., H. Monsees, and J. Hanson (1952) Spontaneous and induced muta- 

 bility in certain strains of Escherichia coli. Bacteriol. Proc, 52: 40-41. 



Devi, P., G. Pontecorvo, and C. Higginbottom (1951) Mutations affecting the nutri- 

 tional requirements of Aerohacter aerogenes induced by irradiation of dried cells. 

 J. Gen. Microbiol., 5: 781-787. 



Dickey, F. H., G. H. Cleland, and C. Lotz (1949) The role of peroxides in the induc- 

 tion of mutations. Proc. Natl. Acad. Sci. U.S., 35: 581-586. 



Downes, A., and T. P. Blvmt (1877) Researches on the effect of light upon bacteria 

 and other organisms. Proc. Roy. Soc. London, 26: 488-500. 



Duggar, B. M. (1936) Effects of radiation on bacteria. In, Biological effects of 

 radiation, ed. B. M. Duggar. McGraw-Hill Book Company, Inc., X'^ew York. 

 Pp. 1119-1149. 



Duggar, B. M., and A. HoUaender (1934a) Irradiation of plant viruses and of micro- 

 organisms with monochromatic light. I. The virus of typical tobacco mo.saic 

 and Serratia mnrccsrcn.s as influenced t)y ultraviolet and visilile light. ,1. Bac- 

 teriol., 27: 219-239. 



— (1934b) Irradiation of plant viruses and of microorganisms with mono- 

 chromatic light. II. Resistance to ultraviolet radiation of a plant virus as con- 

 trasted with vegetative and spore stages of certain bacteria. .J. Bacteriol., 27: 

 241-256. 



Dulbecco, R. (1949) Reactivation of ultra-violet-inactivated bacteriophage by 

 visible light. Nature, 163: 949-950. 



(1950) Experiments on photoreactivation of bacteriophages inactivated with 



ultraviolet radiation. J. Bacteriol., 59: 329-347. 



Ehrismann, O., and W. Noethling (1932) Uber die bactericide Wirkung mono- 

 chromatischen Lichtes. Z. Hyg. Infektionskrankh., 113: .597-628. 



