Correspondence, 1909, 1910, from Hall to Bateson is brief and principally concerns tulips and Japanese art; one letter only from Hankin, nd, re observations in India.

Brief correspondence between Hardy and Bateson, 1925, re Charles Darwin's house; correspondence from Harrison to Bateson, 1919, 1925, re studies of various flora and of melanism.

Two sets of proofs, both corrected.

Correspondence from Darlington to Barnett, the latter apparently an undergraduate. In one letter Darlington gives advice regarding an experiment with Tredescantia; in another he invites Barnett to the John Innes Horticultural Institution to conduct an experiment.