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Letter from Arthur F Astley to Philip Lutley Sclater regarding the subject of reptile feeding at the Zoo

Notes by Julian Huxley on visits to the Zoological Gardens at New York (Bronx Park), Philadelphia, Washington DC, Paris (Vincennes), Hamburg, Berlin, Munich (Hellabrunn) and Frankfort, also the Aquarium at Chicago

Correspondence between Mrs F Edwards and Julian Sorell Huxley regarding principle of keeping animals in captivity

Correspondence with the Royal Society for the Prevention of Cruelty to Animals regarding statements on the capture and confinement of wild animals

Draft notes by Julian Huxley on visits to the Zoological Gardens at New York (Bronx Park), Philadelphia, Washington DC, Paris (Vincennes), Hamburg, Berlin, Munich (Hellabrunn) and Frankfort, also the Aquarium at Chicago

Correspondence with Oliver Graham Jones regarding the order of a breeding pair of Kudu, the new Antelope accommodation and the African Ecology Project

Memorandum regarding periods of fertility and the fertility rates of the various species of mammals on Exhibition at the Gardens of the Zoological Society of London since 1826

Correspondence with Joyce Raven regarding the breeding of Giant Pandas

Letter to J N Ritchie of the Ministry of Agriculture Fisheries and Food regarding the Animal Welfare and Husbandry Committee forming a sub-committee dealing with Animal Breeding