SUPPLEMENT IV 



Nobel Prize Lecture (1958) 

 of George Wells Beadle 



Reprinted by permission of The Nobel Foundation for 

 Les Prix Nobel. Published in Science, izg-.i^is-iJiQ^ 



1959- 



George Wells Beadle (1903- 



SUPPLEMENT V 



Nobel Prize Lecture (1958) 

 of Edward Lawrie Tatum 



Reprinted by permission of The Nobel Foundation for 

 Les Prix Nobel. Published in Science, 129:1715-1719, 



1959- 



Edward Lawrie Tatum (1909- 



