758 RADIATION BIOLOGY 



(1940b) The effect of fast neutrons on the chromosomes of Tradescantia. 



Proc. Natl. Acad. Sci. U.S., 26: 567-575. 



(1941) Spontaneous chromosome aberrations in triploid Tradescantia hybrids. 



Genetics, 26: 632-649. 



- (1943) Comparative studies of the cytogenetical effects of neutrons and 

 X-rays. Genetics, 28: 398-418. 



(1947) Chromosome structural changes in Tradescantia microspores pro- 

 duced by absorbed radiophosphorus. Proc. Natl. Acad. Sci. U.S., 33: 283-287. 



- (1952) Recent evidence on the mechanism of chromosome aberration produc- 

 tion by ionizing radiations. Symposium on radiobiology (Oberlin, 1950), ed. 

 J. J. Nickson. John Wiley & Sons, Inc., New York, pp. 267-284. 

 and A. V. Beatty (1950) The effect of X-irradiation in oxygen and in hydro- 

 gen at normal and positive pressures on chromosome aberration frequency in 

 Tradescantia microspores. Science, 112: 643-645. 



— , , and H. P. Riley (1951) The relationship between the effects of 



temperature and of oxygen on the frequency of X-ray induced chromosome 

 aberrations in Tradescantia microspores. Genetics, 36: 552. 



, , and (1952) The effect of oxygen on the production by fast 



neutrons of chromosomal aberrations in Tradescantia microspores. Genetics, 

 37: 641-649. 



and R. A. Bolomey (1948) Cytogenetical effects of internal radiations from 



radioisotopes. Cold Spring Harbor Symposia Quant. Biol., 13: 104-112. 

 — and A. D. Conger (1950) Chromosomal interchanges induced in Tradescantia 

 microspores by fast neutrons from uranium fission. J. Cellular Comp. Physiol., 

 35 (Suppl.l): 83-88. 



and H. P. Riley (1949) The effect of oxygen on the frequency of X-ray 



induced chromosomal rearrangements in Tradescantia microspores. Proc. Natl. 

 Acad. Sci. U.S., 35: 640-646. 



and (1950) Studies on the mechanism of the oxygen effect on the 



radiosensitivity of Tradescantia chromosomes. Proc. Natl. Acad. Sci. U.S., 



36: 337-344. 

 Gray, L. H. (1952) Biological actions of ionizing radiations, in Progress in biophysics. 



Academic Press, Inc., New York, Vol. 2. 

 Gustafsson, A., (1947) Mutations in agricultural plants. Hereditas, 33: 1-100. 

 Hollaender, A. (1951) Physical and chemical factors modifying the sensitivity of 



cells to high energy and ultraviolet radiation, in Symposium on radiobiology 



(Oberlin, 1950), ed., J. J. Nickson. John Wiley & Sons, Inc., New York, pp. 



285-295. 

 — , W. K. Baker, and E. H. Anderson (1951) Effect of oxj^gen tension 



and certain chemicals on the X-ray sensitivity of mutation production and 



survival. Cold Spring Harbor Symposia Quant. Biol., 16: 315-326. 



G. E. Stapleton, and F. L. Martin (1951) X-ray sensitivity of E. coli. as 



modified by oxygen tension. Nature, 167: 103-107. 



Husted, L. (1936) An analysis of chromosome structure and behavior with the aid 

 of X-ray induced rearrangements. Genetics, 21: 537-553. 



Jensen, K. A., Inger Kirk, G. Kolmark, and M. Westergaard (1951) Chemically 

 induced mutations in Neurospora. Cold Spring Harbor Symposia Quant. Biol., 

 16: 245-261. 



Kaufman, B. P. (1946) Modification of the frequency of chromosomal rearrange- 

 ments induced by X-rays in Drosophila. III. Effect of supplementary treat- 

 ment at the time of chromosome recombination. Genetics, 31 : 449-453. 



— - and H. Gay (1947) The influence of X rays and near infrared rays on reces- 

 sive lethals in Drosophila melanogaster. Proc. Natl. Acad. Sci. U.S., 33: 366-372. 



