Letter to Bateson informing him of his election to membership of the Association's Committee on Theoretical Research in Heredity, 1906; copies of reports by the Committee and other papers.

Correspondence to Bateson during Backhouse's periods of work in Argentina. He discusses the progress of his scientific investigations, chiefly of wheat, and also gives general details of his experiences and observations while in Argentina. Included are photographs sent by Backhouse as follows: at K.2, 15 showing, variously, some colleagues of his (J. Williamson and H. Amos), scenes from his working environment, and general scenes of Argentina; at K.4, 4 showing wheat and rye. Most have been annotated on the back by Backhouse, often with detailed notes.

Correspondence to Bateson, chiefly re Biffen's experiments on wheats.

11pp manuscript draft so titled; typescript revised version inscribed 'Unpublished' on title page. The text shows no significant similarities to the paper on 'bolting' in C.264.

Correspondence, chiefly with the Principal of the Agricultural Institute, Kirton, Lincolnshire, re strains of cabbage sent to Bateson for a breeding experiment.

Contents of three envelopes labelled 'Cereals'. This arrangement was created during earlier work on the collection and has been retained.

Bateson's correspondence with Engledow, 1925, is brief and consists of his comments on three papers on wheat by Engledow, with the latter's reply.

2pp Bateson's manuscript notes.