抄録
The mutation rates per bacterium per generation to streptomycin-indifference were determined with the wild and a partially resistant mutant strain of Salmonella enteritidis strain No. 11. No signiflcant difference was found between these two values. An assumption proposed by the authors that streptomycin-resistance in a narrow sense and streptomycin-indifference are mutations independent of each other was further conflrmed by these studies.
The reason for the contradiction to the similar experiments of Newcombe is discussed.
