SUPPLEMENT IX 



Nobel Prize Lecture (1962) 

 of James Dewey Watson 



Reprinted by permission of The Nobel Foundation 

 for Les Prix Nobel and Elsevier Publishing Com- 

 pany. Published in Science, 140: 17-26, 1963. 



James Dewey Watson (1928- 



i 





SUPPLEMENT X 



Nobel Prize Lecture ( 1 962 ) 

 of Francis H. C. Crick 



Reprinted by permission of The Nobel Foundation 

 for Les Prix Nobel and Elsevier Publishing Com- 

 pany. Published in Science, 139: 461-464, 1963. 



