CELL DIVISION, MORPHOLOGY, VIABILITY 819 



— (1939a) Retardation of early cleavage of Urechis by ultraviolet light. 

 Physiol. Zool., 12: 319-327. 



—(1939b) Ultraviolet radiation and cell division. Nuclear sensitivity: effecl 

 of irradiation of sea urchin sperm. J. Cellular Comp. Physiol., 14: 371-382. 



(1939c) Nuclear and cytoplasmic effects of ultraviolet light. Science, 

 89: 266-267. 



— (1946) Comparative sensitivity of sperm and eggs to ultraviolet radiations. 

 Biol. Bull., 91: 81-87. 



(1947) Radiations and cell division. Quart. Rev. Biol., 22: 253-282. 



Gliicksmann, A., and F. G. Spear (1939) The effect of gamma radiation on cells 

 in vivo. Part II. 1. Single exposure of the fasting tadpole at room tempera- 

 ture. 2. Single exposures of the normal animal at low temperature. Brit. J. 

 Radiology, 12: 486-498. 



, K. Tansley, and C. W. Wilson (1945) The effect of variations in the dosage- 

 rate of gamma radiation on cell degeneration in the frog tadpole. Brit. J. 

 Radiology, 18: 158-164. 



Gray, L. H. (1946) Comparative studies of the biological effects of X rays, neutrons 

 and other ionizing radiations. Brit. Med. Bull., 4: 11-18. 



- (1947) The distribution of the ions resulting from the irradiation of living 

 cells. Brit. J. Radiology, Suppl. 1, pp. 7-15. 



— , F. Ellis, G. C. Fairchild, and E. Paterson (1944) Dosage-rate in radio- 

 therapy. Symposium. Brit. J. Radiology, 17: 327-342. 



, J. C. Mottram, J. Read, and F. G. Spear (1940) Some experiments upon 



the biological effects of fast neutrons. Brit. J. Radiology, 13: 371-388. 



— and J. Read (1942) The effect of ionizing radiations on the broad bean root. 

 IV. The lethal effect of alpha radiations. Brit. J. Radiology, 15: 320-336. 



— and (1950) The effect of ionizing radiations on the broad bean root. 



VII. The inhibition of mitosis by alpha radiation. Brit. J. Radiology, 23: 

 300-303. 



- and M. E. Scholes (1951) The effect of ionizing radiations on the broad bean 



root. VIII. Growth rate studies and histological analyses. Brit. J. Radiology, 



24: 82-92, 176-180, 228-236, 285-291, 348-352. 

 Harrington, N. J., and R. W. Koza (1951) Effect of X-radiation on the desoxyribo- 



nucleic acid and on the size of grasshopper embryonic nuclei. Biol. Bull., 101: 



138-150. 

 Heilbrunn, L. V., and R. A. Young (1935) Indirect effects of radiation on sea urchin 



eggs. Biol. Bull., 69: 274-278. 

 Henshaw, P. S. (1932) Studies of the effect of roentgen rays on the time of the first 



cleavage in some marine invertebrate eggs. I. Recovery from roentgen-ray 



effects in Arbacia eggs. Am. J. Roentgenol. Radium Therapy, 27: 890-898. 



- (1938) The action of X-rays on nucleated and non-nucleated egg fragments. 

 Am. J. Cancer, 33: 258-264. 



- (1940a) Further studies on the action of roentgen rays on the gametes of 

 Arbacia punctulata. I. Delay in cell division caused by exposure of sperm to 

 roentgen rays. Am. J. Roentgenol. Radium Therapy, 43: 899-906. 



- (1940b) Further studies of the action of roentgen rays on the gametes of 

 Arbacia punctulata. II. Modification of the mitotic time schedule in the eggs by 

 exposure of the gametes to roentgen rays. Am. J. Roentgenol. Radium Therapy, 

 43: 907-912. 



— (1940c) Further studies on the action of roentgen rays on the gametes of 

 Arbacia punctulata. V. The influence of low temperature on recovery from 

 roentgen-ray effects in the eggs. Am. J. Roentgenol. Radium Therapy, 43: 

 921-922. 



