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Correspondence to Bateson from Rose Haig Thomas re pheasant hybrids, with her manuscript notes. One letter is a photocopy.

Divided into 3 folders for ease of reference. Correspondence to Bateson, almost entirely from R. Staples-Browne, with several pages of Staples-Browne's manuscript experimental data on heredity in pigeons.

Contents of 6 envelopes which have been described separately and in chronological order. The material covers studies of a diversity of animals and insects, and the principal topics are indicated in the following descriptions.

Contents of two envelopes inscribed 'Size'.

Correspondence, in German; Bateson's manuscript notes in connection with published literature. The principal correspondent is C. Hartlaub.

Manuscript notes and data, mostly in Bateson's hand.

Some are annotated on the back in Bateson's hand; a few have faint annotations on the actual photographs.