A New Respiration Calorimeter and Experiments on the Conservation of Energy in the Human Body, II

rcuit. BridgeNo. 6. °C.C. difference of temperature, and with this difference of temperature 4 small calories per minute, or 0.24 of a large calorie per hour, flow through the walls of the chamber.This w r as determined in the following manner: A current of 0.17 amperes was passed through a resistance within the calorimeter for four hours.The fall of potential was 43 volts, giving 7.3 watts or about 104 small No. 4.] RESPIRATIONCALORIMETER.217 calories per minute.The temperature of the chamber rose a little at first, but was constant during the latter part of the experiment, showing that all of the heat was escaping through the walls.The deflection produced by the thermo-electric elements of circuit No. 1 was about 25 divisions, remaining substantially constant for some time before the end of the experiment.This gives 4 small calories per minute per scale division as the amount of heat flowing through the walls of the calorimeter.This may be called the radiation constant.