472 RADIATION BIOLOGY 



Stadler, L. J. (1928a) Genetic effects of X-rays in maize. Proc. Natl. Acad. Sci. 



U.S., 14: 69-75. 

 (1928b) Mutations in barley induced by X-rays and radium. Science, 68: 



186. 



(1930) Some genetic effects of X-rays in plants. J. Heredity, 21: 3-19. 



(1932) On the genetic nature of induced mutations in plants. Proc. 6th 



Intern. Genetics Congr., Ithaca, 1: 274-294. 



(1939) Genetic studies with ultra-violet radiation. Proc. 7th Intern. 



Genetics Congr. Edinburgh (J. Genetics Suppl.), pp. 269-276 (1941). 



(1941) The comparison of ultraviolet and X-ray effects on mutation. Cold 



Spring Harbor Symposia Quant. Biol., 9: 168-177. 



(1942) Some observations on gene variability and spontaneous mutation. 



Spragg Memorial Lectures on Plant Breeding (3d ser.), Michigan State College. 



and H. Roman (1948) The effect of X-rays upon mutation of the gene A in 



maize. Genetics, 33: 273-303. 

 Stern, C. (1926) Eine neue Chromosomenaberration von Drosophila melanogaster 

 und ihre Bedeutung fiir die Theorie der linearen Anordnung der Gene. Biol. 

 Zentr., 46: 505-508. 



(1927) Die genetische Analyse der Chromosomen. Naturwissenschaften, 



15: 465-473. 



(1943) Genie action as studied by means of the effects of different doses and 



combinations of alleles. Genetics, 28: 441-475. 



, G. Carson, M. Kinst, E. Novitski, and D. Uphoff, (1951) The viability of 



heterozygotes for lethals. USAEC Report UCRL-1614.* 

 , , , , and (1952) The viability of heterozygotes 



for lethals. Genetics, 37: 413-449. 



and G. Heidenthal (1944) Materials for the study of the position effect of 



normal and mutant genes. Proc. Natl. Acad. Sci. U.S., 30: 197^205 



and E. Novitski (1948) The viability of individuals heterozygous for reces- 



sive lethals. Science, 108: 538-539. 

 Stubbe, H., and H. Doring (1938) Untersuchungen iiber experimen telle Auslosung 



von Mutationen bei Antirrhinum majus. VII. Z. indukt. Abstamm.- u. Verer- 



bungslehre, 75: 341-351. 

 Sturtevant, A. H. (1925) The effects of unequal crossing-over at the bar locus in 



Drosophila. Genetics, 10: 117-147. 

 (1937) Essays on evolution. I. On the effects of selection on mutation rate. 



Quart. Rev. Biol., 12: 464-467. 



and G. W. Beadle (1936) The relations of inversions in the X-chromosome of 



Drosophila melanogaster to crossing-over and disjunction. Genetics, 21 : 554-604. 

 Swanson, C. P. (1942) The effects of ultraviolet and X ray treatment on the pollen 



tube chromosomes of Tradescantia. Genetics, 27: 491-503. 

 Timofeeff-Ressovsky, N. W. (1929) The effect of X-rays in producing somatic 



genovariations of a definite locus in different directions in Drosophila melanogaster. 



Am. Naturalist, 63: 118-124. 



(1931a) Die bisherigen Ergebnisse der Strahlengenetik. Ergeb. med. 



Strahlenforsch., 5: 131-228. 



(1931b) Reverse genovariations and gene mutations in different directions, 



II. The production of reverse genovariations in Drosophila melanogaster by X-ray 

 treatment. J. Heredity, 22: 67-70. 



(1932) Mutations of the gene in different directions. Proc. 6th Intern. 



Genetics Congr., Ithaca, N.Y., 1: 308-330. 



— (1933a) Riickgenmutationen und die Genmvitabilitat in verschiedenen 



Richtungen. III. Rontgenmutationen in entgegengesetzten Richtungen am 



