NAVAL RATINGS AID RESEARCH: TESTING THE EFFECTS OF TEMPERATURE ON EFFICIENCY AT THE NATIONAL HOSPITAL OF NERVOUS DISEASES, QUEEN SQUARE, LONDON, ENGLAND, UK, 1945 - At the National Hospital of Nervous Diseases in London, Petty Officer H Andrews takes part in tests to investigate the effect of temperature on efficiency. He is working in a high temperatures in a hot room and wearing a Douglas oxygen consumption bag. This registers the amount of oxygen he is using up, which gives the energy he is expending. The doctor can be seen on the right-hand side, checking on progress. ,

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