162 REFERENCES 



the alkj'lating mutagens and X-radiation. Jour. Genet. 54, 

 146-64 (1956). 



22. FAHMY, O. G., and M. J. FAHMY. Differential gene re- 

 sponse to mutagens in Drosophila melanogaster. Genetics 

 44, 1149-71 (1959). 



23. FREESE, E. On the molecular explanation of spontaneous 

 and induced mutations. Brookhaven Symp. 12, 63-75 (1959). 



24. FREESE, E. The difference between spontaneous and base- 

 analogue induced mutations. Proc. Nat. Acad. Sci. 45, 

 622-33 (1959). 



25. FREESE, E. The specific mutagenic effect of base ana- 

 logues on phage T4. Jour. Molec. Biol. 1, 87-105 (1959). 



26. FREESE, E., E. BAUTZ-FREESE and E. BAUTZ. Hy- 

 droxylamine as a mutagenic and inactivating agent. Jour. 

 Molec. Biol. 3:133-43 (1961). 



27. GERSHENSON, S. M., and I. A. KISELYEVA. (Induc- 

 tion of directed hereditary changes in Drosophila melano- 

 gaster.) C. R. (Dokl.) Acad. Sci. URSS 123, 554-57 (1958). 

 (In Russian.) 



28. GIERER, A., and K. W. MUNDRY. Production of mu- 

 tants of tobacco mosaic virus by chemical alteration of its 

 ribonucleic acid in vitro. Nature 182, 1457-58 (1958). 



29. GILES, N. H. Mutations at specific loci in Neurospora. 

 Proc. 10th Int. Congr. Genetics 1, 261-79 (1958). 



30. GLOVER, S. W. A comparative study of induced reversions 

 in Escherichia coli. In Genetic Studies with Bacteria. 

 Carnegie Inst, of Washington, Publ. 621, 1956 (p. 121-35). 



31. GREEN, D. M., and D. R. KRIEG. The delayed origin 

 of mutants induced by exposure of extracellular phage T4 

 to ethyl methane sulfonate. Proc. Nat. Acad. Sci. 47, 64-71 

 (1961). 



32. GREER, S. B., and S. ZAMENHOF. Loss of purines from 

 DNA heated in mutagenic conditions at physiological pH. 

 Federation Proc. 18, 238 (1959). 



33. HANNAH, A. Localization and function of heterochro- 

 matin in Drosophila melanogaster. Advances in Genet. 4, 

 87-125 (1951). 



34. HASHIMOTO, K. Streptomycin resistance in Escherichia 

 coli analyzed by transduction. Genetics 45, 49-62 (1960). 



35. HESLOT, H. Schizosaccharomyces pombe; un nouvel or- 

 ganisme pour I'etude de la mutagenese chimique. Abh. 

 Deutsche Akad. Wiss. Berlin, Ivlasse Medizin, 1960: 98-105. 



36. HOLLAENDER, A., and G. STAPLETON. The influence 

 of chemical pre- and post-treatments on radiosensitivity of 

 bacteria, and their significance for higher organisms. CIBA 

 Found. Symp. on Ionizing Radiations and Cell Metabolism,. 

 120-35 (1956). 



37. KAUDEWITZ, F. A new type of mutation-delay in bac- 

 teria. Proc. 10th Int. Congr. Genet. 2, 142-43 (1958). 



