11pp manuscript draft so titled; typescript revised version inscribed 'Unpublished' on title page.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.

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, chiefly re Biffen's experiments on wheats.

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

Correspondence to Bateson from various individuals including R.H. Biffen, E. Baur and E. Gold (Meteorological Office), with several pages of enclosed data and notes. Some letters and pages of notes are in German.

2pp Bateson's manuscript notes.

Two letters to Bateson from G.H. Shull, Station for Experimental Evolution, Carnegie Institution of Washington, USA, relating to 'twin-hybrids' of Phaseolus. Included are manuscript notes and data.

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.