One letter only from Ostenfeld to Bateson, 1920, mentioning his stay with Bateson and discussing various plants including Prunus; one letter only from Pearl to Bateson, 1915, re rogue peas; one letter only from Pearson to Bateson, 1912, re a paper by a third party submitted to ?'Biometrika'.

One letter only from Gates, 1919, re cytological work on lettuce.

Reprint (1899) of a paper in Swedish; manuscript English translation (in an unidentified hand) of parts of the paper, or notes on it.

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.

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

Correspondence chiefy re rogue peas found in Laxton Brothers varieties.

One letter only from Salmon to Bateson, 1916, with accompanying notes, on rogues in hops; one letter only from Sander and Sons, 1914, re potato, with 7pp notes on the introduction of the potato into Europe.