DISCUSSION 187 



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DISCUSSION 

 Burton : 



It appears that in my paper I meant to ignore the indirect effect. This I 

 certainly did not mean to do, and Dale has very thoroughly showed the exist- 

 ence of the indirect effect. 



Kamen : 



About 10 years ago Chalmers, co-discoverer of the Szilard-Chalmers reaction, 

 called attention to the alternate flocculation and solution of radioactive gold 

 solutions with differing radiation dosage. He proposed that this might be used 

 as a means of estimating radiation dosage. I should like to know whether any 

 further work has been done using this system. 



Dale: 

 Not so far as I know. 



Solomon: 



Is there any theoretical explanation for the wide variety of compounds which 

 give protection? 



Dale: 



No. The problem of specificity of protection is one in which much future work 

 must be done. It may be that the effect is associated with electron Hnkage, where 



