XXXI. Demonstration: Quantitative determination of 



the CO 2 and H 2 O eliminated from an animal 



in a given time. 



/. Appliances. A four-ounce Woulff bottle with three 

 necks, and with delivery tubes and stopper ground in 

 the necks [Fig. 24 a], three five-inch calcium chloride 

 tubes, with side tubes and perforated glass stoppers, 

 opening and closing the flow of gas [Fig. 24, c, e, f] ; 



FIG. 24. 



FIG. 24. Apparatus for quantitative determination of the carbon 



dioxide gas and water eliminated from an animal in 



a given time. 



Geissler's potash bulbs with CaCl 2 tube ground on (g); 

 two small flasks (b, h) with rubber stoppers, double-bored, 

 with delivery tubes fitted as shown in the figure; a one 

 or two liter bottle with very wide mouth to use as an an- 



140 



