Preface 



This volume reports the papers and discussions presented at the 

 Oberhn Symposium on Radiobiology in June of 1950. As Dr. 

 Friedell has said in the Foreword, the purpose of the meeting was 

 to present in orderly fashion the state of knowledge of the field at 

 that time, and further to indicate the hiatuses that exist in our 

 knowledge, particularly in areas that seemed susceptible of in- 

 vestigative attack. 



It is believed that the volume to a considerable degree fulfills 

 the purpose set forth above. It is unfortunate that publication 

 was delayed, but the vagaries of authors, publication committees, 

 and the international situation were such that our deadlines were 

 largely honored in the breach. 



The chairman of the publication committee wishes here to record 

 his appreciation for the wholehearted cooperation of Drs. P. Mor- 

 rison, M. Burton, E. S. G. Barron, G. Failla, and H. M. Patt, who 

 were responsible for the editing of the material of the five divisions 

 of the meeting. In addition the efforts of Dr. I. Rachwalsky and 

 the Misses E. Tyree and E. Sobel in my office were invaluable in 

 preparing the material for publication. 



J. J. NiCKSON 

 January, 1952 



