Correspondence to Bateson, principally on alkaptonuria, with a page of notes in Bateson's hand. Most of the letters are dated January - June 1902.

Keynes's correspondence to Bateson, 1909, 1910, relates to statistics for colour blindness and Keynes's articles on Karl Pearson's work.

One letter only from Starling to Bateson, 1906, concerning experiments of G.P. Mudge.