1328 BIOLOGICAL EFFECTS OF RADIATION 



47. HoLWECK, F., and A. Lacassagne. Actions des rayons a sur Polytoma uvella. 

 Determination des "cibles" correspondant aux principales lesions observees. 

 Compt. Rend. Soc. Biol. [Paris] 107: 812-814. 1931. 



48. HoLWECK, F., and A. Lacassagne. Sur le mccanisme de Faction cytocaustique 

 des radiations. Compt. Rend. Soc. Biol. [Paris] 103 : 766-768. 1930. 



49. Huettner, a. F. Maturation and fertilization in Drosophila melanogaster. 

 Jour. Morph. and Physiol. 39: 24^265. 1924. 



50. JoLLOS, V. Studien zum Evolutionsproblem. I. Uber die experimentelle 

 Hervorrufung und Steigerung von Mutationen bei Drosophila melanogaster. 

 Biol. Zentralbl. 50 : 542-554. 1930. 



51. KuLENKAMPFF, H. Vergleichendc Untersuchungen uber die Energie und die 

 luft-ionisierende Wirkung von Rontgenstrahlen verschiedener Wellenliinge 

 Ann. Phys. 79: 97-142. 1926. {See also Ibid. 80: 261-278. 1926.) 



52. Lacassagne, A. Action des rayons K de I'aluminium sur quelques microbes. 

 Compt. Rend. Acad. Sci. [Paris] 186: 1316-1317. 1928. {See also Ibid. 188: 

 197-200. 1929.) 



53. Lacassagne, A. Difference de Taction biologique provoquee dans le levures 

 par diverses radiations. Compt. Rend. Acad. Sci. [Paris] 190: 524-526. 1930. 



54. Langendorff, H. and M., and A. Reuss. tlber die Wirkung von Rontgen- 

 strahlen verschiedener Wellenlange auf biologische 01)jekte. II. Strahlen- 

 therapie 46: 289-292. 1933. [See also (a) IV. Ibid. 46: 655-662. 1933.] 



55. LuYET, B. J. The effects of ultra-violet, X-, and cathode rays on the spores of 

 Mucoraceae. Radiology 18: 1019-1022. 1932. 



56. MacArthur, J. W., and E. W. Lindstrom. Radium, cathode, and x-ray 

 mutants. Proc. Vlth Intern. Cong. Genetics 2 : 336. 1932. 



57. Medvedev, N. The production of mutations in Drosophila melanogaster by 

 the combined influence of x-rays and salts of heavy metals. Compt. Rend. 

 Acad. Sci. USSR. 1933. 



58. Morgan, T. H., C. B. Bridges, and A. H. Sturtevant. The genetics of Dro- 

 sophila. 262 p. M. Nijhoff; 's Gravenhage, 1925. 



59. MuLLER, H. J. The problem of genie modification. Verhand. V. Intern. 

 Kong. Vererb. Berlin. 1: 234-260. 1927. 



60. MuLLER, H. J. Artificial transmutation of the gene. Science 66: 84-87. 1927. 



61. MuLLER, H. J. The production of mutations by x-rays. Proc. Nation. Acad. 

 Sci. 14: 714r-726. 1928. 



62. MuLLER, H. J. The measurement of gene mutation rate in Drosophila, its high 

 varial)ility, and its dependence upon temperature. Genetics 13 : 279-357. 1928. 



63. MuLLER, H. J. The effects of X-radiation on genes and chromosomes. Science 

 67:82-83. 1928. 



64. MuLLER, H. J. The method of evolution. Sci. Monthly 29: 481-505. 1929. 



65. MuLLER, H. J. Radiation and genetics. Amer. Nat. 64: 220-251. 1930. 



66. MuLLER, H. J. Further studies on the nature and cause of gene mutation. 

 Proc. Vlth Intern. Cong. Genetics 1 : 213-256. 1932. 



67. MuLLER, H. J., and E. Altenburg. The frequency of translocations produced 

 by X-rays in Drosophila. Genetics 16: 283-311. 1930. [See also Anat. Rec. 

 41: 100. 1928. (Abstr.)] 



68. MuLLER, H. J. and E. Altenburg. The rate of change of hereditary factors in 

 Drosophila. Proc. Soc. Exp. Biol, and Med. 17: 10-14. 1919. 



69. MuLLER, H. J., and L. M. Mott-Smith. Evidence that natural radioactivity 

 is inadequate to explain the frequency of 'Natural Mutations.' Proc. Nation. 

 Acad. Sci. 16: 277-285. 1930. 



70. Oliver, C. P. The effect of varying the duration of x-ray treatment upon the 

 frequency of mutation. Science 71: 44-46. 1930. 



