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Bateson's correspondence with de Beer, 1924, is brief, consisting of his comments on de Beer's book 'Growth' (1924) and de Beer's reply.

Photographs, negatives and slides: Seed size, Newcastle 1956 MS and normal bean flowers Frost damaged beans Outdoor freezing cabinet test 1963 Snow cover and frost damage X-rays of bean flowers 8 leaved clover from Macclesfield Advertizer Jean Wellbank beans 1955 NIAB Misc 1954 F2 bean flower 1984

1. Hb black notebook, spine labelled 'Clover Plots 58': sowing notes on clover drill trial 1957, sclerotina clover plowed out 1958. 2. Hb blue notebook entitled 'Field Scores'; dates: 1958-1963: sowing notes on hybrids, parents of tester lines, Donall Seale M S Hybrids, inbreds, observation rows, male sterile hybrids, tester lines, large scale trials. 3. Hb blue notebook entitled 'Plot Book I/58-9: sowing notes on Winter beans trial 1958-9 T1-T29 3. Hb blue notebook entitled 'Plot Book II /58-9': sowing notes on Winter beans 1958-9,, T30-T46. 4. Hb blue notebook entitled '1958 Bean Notebook': notes on seed setting, auto fertility of S45 line, yield of 447 programmes in 1958 trials, components of yield 1957-8 Fs and parents, analysis of C..? v Hybrid trial 1958.

1. Hb, blue/grey notebook entitled 'Inbred beans 1953' 2. Hb, blue/grey notebook entitled 'Beans 1953-4 (Parsons)' 3. Hb, black notebook, no title; notes on metol hydroquinione developer (photographic film developer) and lists of photographs entitled: 'Negatives Reel 1', 'Reel 2 (2 April 1953'), 'Reel 3 (2 March 1954)' and 'Photographs 8-4-60'. 4. Hb, black notebook, spine labelled '/53 T/C': notes on caravan payments, bean vernalization, photograph notes, watering with Chesunt compound, reading list, embryo cultures, clover, sowing notes. 5. Hb, burgundy notebook entitled 'Bean and Clover Seeds etc. 1953' sowing notes, notes on winter hardiness, seed types.

1. Hb burgundy notebook entitled 'Beans crossing, 4th inbreds 1955'; codes, sowing notes. 2. Hb black notebook entitled 'Clover infection plots 1955'; sowing notes. 3. Hb grey notebook entitled 'Beans Pollinations 55-6'; notes on setting methods, inbreds, crosses, clover self-incompatibility, sowing notes. 4. Hb red notebook entitled 'Beans, Morphological Observations 1955'; observation notes, sowing notes.

1. Hb blue/grey notebook, spine labelled 'Bean'; notes on colour code, second series pollinators, male steriles, classification of F2 plants, pollinations 1957 (male steriles), hybridisation programme, experimental plants, crossing system. 2. 1. Hb blue/grey notebook, no title; sowing notes 'KJEL DAHLS 1957', repeats, 3rd inbreds, 1958-9 inbred sowing notes, highest inbreds, new lines, hybrids PBI trial, crop husbandry trials, 1959-61 sowing notes, new lines, Trumpington trial, highest yielding, high density etc.' 3. Hb black notebook spine labelled 'Clover - Scleroting 57/8'; sowing notes, data on sclerotinia infections 1957-1958. Back of book has observations from 1956-7 on 'normal, albino and tall' plants. 4. Hb Burgundy notebook entitled 'Notebook 1957'; notes on pollination, 5. Hb black notebook spine labelled 'Notes /57'; notes on respiratory carriers, peroxidases, outbreeding mechanisms, notes on science books/articles, method of selection, back of book notes on Winter beans at Trumpington 1956. 6. Hb red notebook entitled 'Winter Beans 1957-8'; sowing notes.

Bean Experiments: experiments and field trials including on freezing, hybrids, flower colour, eelworms and blackfly

Photographs 1 of 2: Hybrids demo plots 1971 Bean hybrids 1967 Blackfly, whole crop beans, cages, 1967 Outdoor freezing cabinet tests plot 21, 1962 Freezing test F2 Spring beans isolation plot 1968 Portugal 1989

Potographs 2 of 2: Freezing tests, Feb 1968 Field tests 1962 Field tests 1972 Outdoor freezing cabinet tests plot 21, 1963 Broad bean wagewinger 1961 Inbred winter beans 1967 Hybrid beans 1967 Bumblebees from book 1966 Eelworm tests 1967 Flower colour single class Dwarf x 545 F1 1968 Bees and Pollen NAAS quarterly review No 81