Bibliographical notes, in Bateson's hand unless otherwise stated.

Brief correspondence to Bateson re pieris napi eggs; 6pp experimental data and further pages of notes, all in Bateson's hand.

Brief correspondence to Bateson; 4pp of his manuscript notes on 'Imperfect sexual orientation in ants'; several further pages of notes on published literature. Correspondents include W. Heape.

Correspondence from Brindley is brief, 1897, 1912, and on various topics including earwigs.

Correspondence to Bateson, with one draft of a letter by Bateson (K.67). The subject-matter is wide-ranging, covering work on Drosophila and other studies, lectures and publictions, Morgan's visit to England in May-June 1922, general professional activities and personal matters. Divided into two folders for ease of reference.

Contains pencil notes in Bateson's hand, chiefly on various bird species, and also on insects, wheat etc. A few sketches are included. Paginated '1-174'.

Correspondence to Bateson; 4pp manuscript notes in Bateson's hand. One letter (from R. Goldschmidt) is in German. Its subject, 'sex chromosome in butterfly', has been inscribed on the first page by Bateson.

9pp manuscript notes by Bateson.

Letter to Bateson (in French); 2 sets of paginated manuscript notes by Bateson (5pp and 10pp); further pages of notes (on small pieces of paper) re published literature.