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Stove & Greenhouse Plants, H B May & Sons Ltd, Fern Nurseries, Dyson's Road, Upper Edmonton, N.

Manuscript of 'Variations in the compositions of plant viruses in relationship to their hosts with special reference to the tobacco mosaic group of viruses', Roy Markham and M W Rees. Transcript of the discussion between Markham and H Fraenkel-Contrat at the Strasbourg meeting. Correspondence with Helen Costinescu and Marianne, Inst. de Biologie Physico-Chimique, France re proofs of the paper and corrections to French translation, 2, 6, 22 Mar 1962.

Notes, lists.

Notes on processing trials, Cambridge selections

Includes summary of Biffen's crosses (1930). Mainly in annual files, also 2 miscellaneous files covering whole period.

files and printed material on specific subjects relating to Cambridge selections, especially processing trials.

Relate to the 'Cambridge' strawberry varieties. Hedley Williams worked with Daniel Boyes on these, and brought the last Cambridge crosses to JI as the basis of the JI strawberry breeding programme.

Annual files containing lists of crosses, scoring of seedlings, notes, draft reports. Also one composite file of D Boyes' notes and correspondence, mainly re transfer of breeding programme from Cambridge.