Item is a newspaper clipping consisting of 1 column in 5 separate pieces. Subheadings: 'Prof. J. J. R. MacLeod Replies to Times Letter of Sir William Bayliss. How it was Done. Head of Department Declines Credit for New Diabetes Treatment.' Macleod wrote to the Toronto newspapers to correct Bayliss' statement giving Macleod, not Banting, credit for the discovery of insulin.