CONTENTS 



PAGE 



INCORPORATION DU i*C DANS LE GLYCOGENE DU FOIE 



APRES IRRADIATION 225 



Mme. Lourau-Pitres 

 Discussion .......... 228 



OBSERVATIONS MADE ON THE HUMAN RESPONSE TO A 

 SINGLE DOSE OF X-RAYS— THE LATENT PERIOD . . 229 



W. M. Court Brown and John D. Abbatt 

 Discussion .......... 232 



COMPARISON OF THE PHYSIOLOGICAL RESPONSE TO 

 RADIATION AND TO RADIOMIMETIC CHEMICALS . 235 

 L. A. Elson 



A NEW HYPOTHESIS FOR 'CHROMATID' CHANGES . 243 



S. H. Revell 



EFFECT OF OXYGEN TENSION ON THE PRODUCTION 

 OF CHROMOSOME BREAKAGE BY IONIZING RADIA- 

 TIONS: AN INTERPRETATION 254 



C. P. SWANSON 



THE RELATIVE EFFECTIVENESS OF VARIOUS IONIZING 

 RADIATIONS ON CHROMOSOME BREAKAGE IN TRADE- 



SCAJVTIA 262 



J. S. Kirby-Smith, C. W. Sheppard and Doris L. Craig 



CHROMOSOME BREAKAGE BY DIEPOXIDE AND BY X- 



RAYS . 265 



G. Roy Lane 



THE RELATIONSHIP BETWEEN CHROMOSOME FRAG- 

 MENTATION AND REJOINING IN TRILLIUM ERECTUM 

 FOLLOWING THERMAL NEUTRON AND X-IRRADIA- 



TION 275 



Eleanor E. Deschner 

 Discussion on Papers by Revell, Swanson, Kirby-Smith, Lane 

 and Deschner ......... 277 



STUDIES ON THE EXPERIMENTAL CONTROL OF THE 



MUTATION PROCESS 282 



Ake Gustafsson 

 Discussion .......... 284 



THE INFLUENCE OF POST-RADIATION FACTORS ON 



EFFECTS PRODUCED IN BARLEY 285 



L. Ehrenberg 



PATHOLOGY OF MICE IRRADIATED AFTER INJECTION 

 OF CYSTEAMINE ([i-MERCAPTOETHYLAMINE) . . 290 



M. A. Gerebtzoff and Z. M. Bacq 



SOME FACTORS CONTROLLING THE HAEMATOPOIETIC 

 REGENERATION IN WHOLE BODY IRRADIATED RATS 292 

 E. H. Betz 



