138 



A RESPIRATION CALORIMETER. 



ELECTRICAL CONNECTIONS ON THE TABLE. 



The scheme of the various electrical connections on the observer's 

 table is given in figure 38. 



*2 "I *3 



m 



oobocTo 



OOOO 



0900 _ 



o 



<-0 



o 



TT 



AIR 



3Z C.PLAMP 



GALVANOMETER 



TO GAL, 



HOOD 



STORAGE BATTERY 



FIG. 38. Electrical Connections on the Observer's Table. All electrical connections are, for con- 

 venience, brought to the observer's table. The rheostat controlling the heating circuits, the 

 mercury switch, the thermal junctions and thermometer circuits, and, at right, connections 

 for storage battery for use in electrical check experiments and for magnetizing the fields of 

 the bicycle ergometer are shown. 



