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Scientific American, Vol. 81, No. 6 (August 1899) (1899)

leaf 4

An illustration from Scientific American, Vol. 81, No. 6 (August 1899), 1899, leaf 4
od in the body, the nutritive and the innermost wooden wall is an air value of food materials, and the ways of fit- space of 2 inches wide. Between this wall ting our food to the demands of health, and the next is a third air space of 3 inches, work, and purse. The energy of the income OUTLINE… … means of a telephone. for use during the day, and a folding HORIZONTAL CRJSS SECTION OF RESPIRATION CALORIMETER Measurements of the temperatures bed for use at night. When the ex- are made in part by mercury ther- periment involves muscular work, a sta- but mainly by electrical methods. There…

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