RADIATION AND THE STUDY OF MUTATION IN ANIMALS 1253 



3. Altexbuhg, E. The limit of radiation frequency effective in producing muta- 

 tions. Amer. Nat. 62: 540-45. 1928. 



4. Altekburg, E. The effect of ultra-violet radiation on mutation. Anat. Rec. 

 47:383. 1930. (Abstr.) 



5. Alten'burg, E. The production of mutations by ultra-violet light. Science 

 78:587. 1933. 



6. AsTAUROFF, B. L. The experimental production of mutations in the silk worm 

 (Bombyx mori L). 1. Zeitsch. Biol. 2: 116-131. 1933. (Russian.) 



7. Babcock, E. B., and J. L. Collins. Docs natural ionizing radiation control 

 rate of mutation? Proc. Nation. Acad. Sci. 15: 623-28. 1929. 



8. Bagg, H., W. C. MacDowell, and E. M. Lord. Further experiments with 

 X-rayod mice and their descendants. Anat. Rec. 31: 342. 1925. (Abstr.) 



9. Bridges, C. B. Aberrations in chromosomal materials. Eugenics, Genetics 

 and Family 1: 76-81. 1923. 



10. Bridges, C. B. The translocation of a section of chromosome-II upon chromo- 

 some-III in Drosophila. Anat. Rec. 24 : 426-427. 1923. (Abstr.) 



11. Burkart, a. Investigaciones gencticas sobre una nueva nuitacion de Drosophila 

 melanogaster determinante de exeepci6nes hereditarias. Revista de la Facult. 

 Agron. Veterin. 2 : 393-490. 1931. 



11a. Burkart, A., and Curt Stern. Untersuchungen iiber eine spontane Chro- 

 raosomenverlagerung bei Drosophila melanogaster. Zeitsch. Indukt. Abstamm. 

 und Vererbungsl. 64: 310-325. 1933. 



12. Chalmers, R. Eliz.vbeth. Mutations and freaks from X-rayed males of 

 Habrobracon. Anat. Rec. 47 : 394. 1930. (Abstr.) 



12a. Crowther, J. A. The action of X-rays on Colpidium colpoda. Proc. Roy. 

 Soc. [London] B 100: 390-404. 1926. 



13. Demerec, M. Mmiature-alpha — a second frequently mutating character 

 in Drosophila virilis. Proc. Nation. Acad. Sci. 12 : 687-90. 1926. 



14. Demerec, M. Magenta-alpha — a third frequently mutating character in 

 Drosophila virilis. Proc. Nation. Acad. Sci. 13: 249-253. 1927. 



15. Demerec, M. The behavior of mutable genes. Proc. V. Internat. Cong. 

 Genet. Zeitsch. Indukt. Abstamm. und Vererbungsl. Sup. 1: 234-260. 1928. 



16. Demerec, M. Mutable characters of Drosophila virilis. I. Reddish-Alpha 

 Body character. Genetics 13: 359-88. 1928. 



17. Demerec, M. Genetic factors stimulating mutability of the miniature-gamma 

 wing character of Drosophila virilis. Proc. Nation. Acad. Sci. 15: 834-38. 

 1929. 



18. Demerec, M. Changes in the rate of mutability of the mutable miniature gene 

 of Drosophila virilis. Proc. Nation. Acad. Sci. 15: 870-76. 1929. 



19. Demerec, M. A genetic factor affecting germinal mutability of miniature- 

 alpha wing character of Drosophila virilis. "The Laws of Life" memorial 

 volume for Prof. V. Ruzicka. Pp. 45-57. Prague. 1930. 



20. Demerec, M. Changes in the instability of miniature-3 gene of Drosophila 

 during ontogeny. Proc. VI. Int. Cong. Genet. 2: 43. 1932. 



21. Demerec, M. Rate of instaV)ility of miniature-3 gamma gene of Drosophila 

 virilis in the males, in the homozygous and in the heterozygous females. Proc. 

 Nation. Acad. Sci. 18: 656-58. 1932. 



21a. Demerec, M. What is a gene? Jour. Hered. 24: 368-378. 1933. 



22. Demerec, M. The effect of X-ray dosage on sterility and number of lethals 

 in Drosophila melanogaster. Proc. Nation. Acad. Sci. 19: 1015-1020. 1933. 



23. Demerec, M. The effect of X-rays on the rate of change in the unstable 

 miniature-3 gene of Drosophila virilis. Proc. Nation. Acad. Sci. 20: 28-29. 

 1934. 



