31 K) 



RADIATION BIOLOGY 



Tablk lO-l. Incident Energies at 2537 A Necessary to Inhibit Colony 

 Formation in 90 per cent of the Organisms 



4 



4 



" Agar surface. 



'' Liquid suspension. 



" Estimated from \\itkin (1947) and Dcmerec and Latarjet (1946). 



