CHROMOSOME ABERRATIONS IN ANIMALS 705 



Limperos, G., and W. A. Mosher (1950) Roentgen irradiation of desoxyribonucleic 

 acid. I. Mechanism of the action of irradiation on aqueous solution. Am. J. 

 Roentgenol. Radium Therapy, 63: 681-693. 



Lison, L., and J. Pasteels (1950) Mesures photometriques de la teneur en acide 

 desoxyribosenucleique des noyaux au cours de la mitose. Acad. roy. Belg., 

 Classe sci., Mem., 36: 348-354. 



London Conference (1947) Certain aspects of the action of radiation on living cells. 

 Brit. J. Radiology, Suppl. 1. 



McClintock, B. (1939) The behavior in successive nuclear divisions of a chromo- 

 some broken at meiosis. Proc. Natl. Acad. Sci. U.S., 25: 405-416. 



Mainx, F. (1940) Die Wirkung von Rontgenstrahlen auf die Trennung der 

 attached-X Chromosomen bei Drosophila melanogaster. Z. Abstamm.- u. Verer- 

 bungsl., 78: 238-245. 



Makhijani, J. K. (1945) Mutation frequency as conditioned by the manner of appli- 

 cation of radiation. Indian J. Genetics Plant Breeding, 5: 15-31. 



(1949) The ineffectiveness of temperature in influencing the production of 



mutations by X-rays. J. Univ. Bombay, 13: 1-13. 



Makino, S. (1939) On the tetraploid spermatocytes produced by irradiation in 

 Podisma mikado (Acrididae). Japanese J. Genetics, 15: 80-82. 



Marshak, A. (1936) The structure of the chromosomes in the salivary gland of 

 Drosophila melanogaster . Am. Naturalist, 70: 181-184. 



(1942) Effects of X-ray and neutrons on mouse lymphoma chromosomes in 



different stages of the nuclear cycle. Radiology, 39: 621. 



and M. Bradley (1945) Relative sensitivity of chromosomes to neutrons 



and X-rays. III. Comparison of carcinoma and lymphosarcoma in the rat. 

 Proc. Natl. Acad. Sci. U.S., 31: 84-90. 

 Mavor, J. W. (1922) The production of non-disjunction by X-rays. Science, 55: 

 295-297. 



(1924a) The production of non-disjunction by X-rays. J. Exptl. Zool., 



39: 381-432. 



(1924b) Gynandromorphs from X-rayed mothers. Am. Naturalist, 58: 



525-529. 



Metz, C. W. (1947) Duplication of chromosome parts as a factor in evolution. Am. 

 Naturalist, 81 : 81-103. 



and R. D. Boche (1939) Observations on the mechanism of induced chromo- 

 some rearrangements in Sciara. Proc. Natl. Acad. Sci. U.S., 25: 280-284. 



and M. L. Bozeman (1942) Chromosome studies on Sciara. Carnegie Inst. 



Wash. Year Book, No. 41, pp. 237-242. 



and E. G. Lawrence (1938) Preliminary observations on Sciara hybrids. 



J. Heredity, 29: 179-186. 

 Mickey, G. H. (1943) The influence of low temperature on the frequency of trans- 

 locations produced by X-rays in Drosophila melanogaster. Genetica, 21 : 386-407. 



(1942) Polyploid gametes in the Louisiana lubber grasshopper. Proc. 



Louisiana Acad. Sci., 6: 82. 



Mitchell, J. S. (1940) Increase in ultra-violet absorption of cytoplasm after thera- 

 peutic X and gamma irradiation. Nature, 146: 272-273. 



(1942) Disturbance of nucleic acid metabolism produced by therapeutic 



doses of X and gamma radiations. I. Methods of investigation. II. Accumula- 

 tion of pentose nucleotides in cytoplasm after irradiation. III. Inhibition of 

 synthesis of thymo-nucleic acid by radiation. Brit. J. Exptl. Path., 23: 285-313. 



(1943) Metabolic effects of therapeutic doses of X and gamma radiations. 



Brit. J. Radiology, 16: 339-343. 



