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.

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.

3pp typescript draft; revised version; brief correspondence concerning comments on the paper before submission, August 1931.

Correspondence from Vilmorin to Bateson, 1909, 1910, is principally on wheat varieties (also reference to Samuel Butler's books); one photocopy only of a letter from de Vries to Bateson, 1913, re Bateson's published Silliman lectures and 'Problems of Genetics' etc.