42
Installation of the apparatus 42
Temperature control of the ingoing air 43
The heat of vaporization of water 44
The bed calorimeter 45
Measurements of body-temperature 48
Control experiments with the calorimeter 50
Determination of the hydrothermal equivalent of the calorimeter 52

General description of the respiration apparatus 54
Testing the chamber for tightness 54
Ventilation of the chamber 54
Openings in the chamber 55
Ventilating air-current 57
Blower 57
Absorbers for water-vapor 58
Potash-lime cans 60
Balance for weighing absorbers 61
Purification of the air-current with sodium bicarbonate 63
Valves 63
Couplings 64
Absorber table 65
Oxygen supply 67
Automatic control of oxygen supply 69
Tension equalizer 71
Barometer 72
Analysis of residual air 73
Gas-meter 75
Calculation of results 76
Analysis of oxygen 76
Advantage of a constant-temperature room and temperature
control 77
Variations in the apparent volume of air 77
Changes in volume due to the absorption of water and
carbon dioxide 78
Respiratory loss 78
Calculation of the volume of air residual in the chamber