Proofs, partly corrected.
12pp typescript copy with minor corrections.
15pp typescript draft, titled as above, and inscribed '5.7.44' on title page. This was probably published as 'Heredity, Development and Infection', 'Nature', 154 (August 1944), 164-169.
Haldane's notes were found clipped to the draft pages by Darlington.
Single typescript page so titled. Page also headed 'Social Biology Courses 1964-6' and '9 April 1965'.
Most are printed by the Colonial Office and other UK Govenment departments. Some have annotations in Darlington's hand.
Arranged alphabetically by surname.
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.