CONTENTS. 



PAGE 



Introduction 1 



Calorimeter laboratory 3 



General plan of calorimeter laboratory 3 



Heating and ventilating 7 



The calorimeter 10 



Fundamental principles of the apparatus 10 



The calorimeter chamber 11 



General construction 14 



Prevention of radiation 17 



The thermo-electric elements 19 



Interior of the calorimeter 20 



Heat-absorbing circuit 22 



Thermometers 26 



Mercurial thermometers 26 



Electric-resistance thermometers 28 



Air-thermometers 28 



Wall thermometers 29 



Electrical rectal thermometer 29 



Electric-resistance thermometers for the water-current 29 



Observer's table 31 



Connections to thermal- junction systems 33 



Rheostat for heating 34 



Wheatstone bridges 34 



Galvanometer 35 



Resistance for heating coils 35 



Temperature recorder 36 



Fundamental principle of the apparatus 38 



The galvanometer 39 



The creeper 40 



The clock 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 hvdrothermal 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 



v 



