Abstract
LONDON. Royal Society, June 14.—A. V. Hill: (1) Myothermic apparatus. Improvements have made it possible to measure with relative accuracy, in the sartorius of the frog or any similar muscle, not only the heat suddenly produced by a single stimulus, but also that liberated over long intervals at rest or in recovery, or as the result of prolonged discontinuous stimulation. A Zernicke moving-coil galvanometer (Kipp) has been employed. The total heat has been measured from the area of the deflexion-time curve. The temperature of the muscle chamber has been maintained constant within 0.001° C. An ‘all-metal’ thermopile has been devised which responds quickly and is very completely insulated. A Ringer's solution containing phosphate (7 to 15 mgm. per cent) has led to improved performance in the isolated muscles employed.
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Societies and Academies. Nature 121, 1005–1006 (1928). https://doi.org/10.1038/1211005a0
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DOI: https://doi.org/10.1038/1211005a0