Description | Discusses work he is doing on penicillin - Dr Cassidy from Yale visited laboratory - Cassidy thought, from properties of penicillin, that charcoal would be more suitable adsorbent than alumina - Parke, Davis and Co are experimenting with penicillin - comments on this - discusses visit by three people from Lederle Laboratories Inc and work Lederle are doing on penicillin - thought dry standard had lost some activity - comments on this - is sending some corn steep liquor to Oxford - has not yet tried out the precursor idea - has some flasks with replacement media containing kojic acid but no penicillin has formed in these or in the controls. |