098 RADIATION BIOLOGY 



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(1923) The translocation of a section of chromosome II upon chromosome III 



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and T. H. Morgan (1923) The third chromosome group of mutant characters 



of Drosophila melanogaster. Carnegie Inst. Wash. Pub. 327: 1-251. 

 Brookhaven National Laboratory Conference (1948) on biological applications of 



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 Burdette, W. J. (1940) The effect of artificially produced tetraploid regions of the 



chromosomes of Drosophila melanogaster. Univ. Texas Pub. 4032: 157-163. 

 Butler, G. C. (1949) The effect of X- and 7-rays in aqueous solutions of sodium 



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 Carlson, J. G. (1938a) Some effects of X-radiation on the neuroblast chromosomes 



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 (1938b) Mitotic behavior of induced chromosomal fragments lacking spindle 



attachments in the neuroblasts of the grasshopper. Proc. Natl. Acad. Sci. U.S., 



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(1940) Immediate effects of 250 r of X-rays on the different stages of mitosis 



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(1941b) Effects of X-radiation on grasshopper chromosomes. Cold Spring 



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Carothers, E. E. (1940) A cytological study of X-rayed grasshopper embryos. 

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Catcheside, D. G. (1938) Frequency of induced structural changes in the chromo- 

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 and D. E. Lea (1945a) The rate of induction of dominant lethals in Drosophila 



melanogaster sperm by X-rays. J. Genetics, 47: 1-9. 



and (1945b) Dominant lethals and chromosome breaks in ring 



X-chromosomes of Drosophila melanogaster. J. Genetics, 47: 25-40. 



— , , and J. M. Thoday (1946a) Types of chromosome structural change 



induced by the irradiation of Tradescantia microspores. J. Genetics, 47: 1 13-136. 

 and (1946b) The production of chromosome structural 



changes in Tradescantia microspores in relation to dosage, intensity and tem- 

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 Catsch, A. (1948) Versuche an Drosophila liber die Dosisabhangigkeit strahlenin- 

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— , A. Kanellis, G. Radu, and P. Welt (1944) Uber die Auslosung von Chromo- 

 somenmutationen bei Drosophila melanogaster niit Rontgenstrahlen verschiedener 

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— , O. Peter, and P. Welt (1944) Vergleich der chromosomenmutations-auslo- 

 senden Wirkung von Rontgenstrahlen und schnellen Neutronen bei Drosophila 

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