The controversy between John H. Northrop and Max Delbrück on the formation of bacteriophage: Bacterial synthesis or autonomous multiplication?

Abstract

Summary In the 1940s a controversy developed between John H. Northrop (Nobel Laureate, 1946) and Max Delbrück (Nobel Laureate, 1969) on the formation of bacteriophage. From the historiography of molecular biology there emerges a picture of an obstinate Northrop who repudiated the ‘correct’ insights revealed by the experiments of Delbrück. The established reputation of Northrop confronts one with the question of why Delbrück's epoch-making experiments were not convincing for Northrop. It will be argued that this was a consequence of local incommensurability between Northrop's physiological/chemical research style and Delbrück's bacteriological/genetic research style. The analysis of this controversy reveals the elements that made up these two research styles.

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