May I ask you to delve into the (alas! no longer recent) past? In your paper on 'Segregations in E. coli' published
in Genetics 32, 505-525 (1947), you referred (last section, p 508) to mutants resistant to chloroacetate (Cla11 [?]), which
differed from their wild-type parents in being affected "in the metabolism of pyruvic and acetic acids" -- tantalizingly,
you ended that sentence with the phrase . . "which will be described in more detail elsewhere". I have tried to trace
this 'elsewhere', but without success. Has further work on these types of mutant been published by you? If so, could
you tell me where and when? Alternatively, have the disfunctions in "the metabolism of pyruvic and acetic acids" selected
or Cla11 [?] been further characterized?