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Includes manuscripts, notes, correspondence, papers, reviews on male sterility, cotton, fuchsia, cacao, plant breeding, sheep breeding, Lolium, twins and human genetics, plant diseases, wheat, pollen germination, Fragaria, Genetical Society, hybrids, algae, plant nutrition, RIbes, maize, Petunia, Eriophorum, watercress, statistics, heterosis, tomato, Drosophila, lupin, narcissus, Vavilov NI, University of Manchester, Senecio, forests

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.

Material relating to Rowland Biffen and his work on wheat at the Plant Breeding Institute (PBI); Newspaper cuttings re. research on wheat, 1905-1949; scrapbook; photographs; notes on wheat in Kenya, 1926-1927; Also copies of drawings by J Ling [see work with F Engledow]

Includes published and unpublished material, papers, notebooks, lectures and addresses

Amphibia, echino-dermata, fishes, hemichordate, insect, mollusca, reptiles, tunicate, zoology general Crustacea and arachnida, Dicotyledons, flagellate, insect, invertebrates, protozoa Dicotyledons, sex of animals and plants Cytology, evolution, genetics, genetics of microorganisms, grafts, heterostylism (primula), pigments (animals and plants) Botony and plant physiology Algae and lichens, bryophta, fossil botany, fungi, geology, gymnosperms, plant anatomy, ecology, geography, local floras, plant taxonomy, teratology, pteridophyta, human heredity Agriculture and horticulture Cereals and grasses, cultivated plants, origin and history, forest, fruit growing, greenhouses, medicinal plants, ornamental plants, plant breeding, hybrids, varieties, seed and seed production, stocks and scions, vegetable crops, weed control. Biochemistry and biophysics, botany early reprints, food, chemistry, fungi early reprints, methods and apparatus, plant pathology, protein structure, radiobiology, science and society statistics, zoology early reprints, oversize Bacteriophage, birds, cereals, cytology, drosophila, forage crops, genetics, heterogeneous crops, mouse, plant breeding, plant cytology, radiation mutagens, tropical agriculture. Subject and classified indexes.

Photocopied pages from 'Gardeners' Chronicle' containing reports on lectures from 1912.

Correspondence. Research, notebooks, manuscripts. Collection of glass slides. Collection of scientific phoptographs. Other: biographical/misc.

Studies in genetic instability of Antirrhinum majus

Letter to Dr E G Jefferys from R A Fisher about statistics and genetics, mentioning chapters of his books on statistics that would be helpful for geneticists. Talks about his latest experiments on Lythrum chromosomes and mice inbreeding. Mentions Mathers, Haldane and de Winton.