FIG. 14. Vise for tightening Carbon-Dioxide Absorbers. Top of Absorber is held in a wooden vise 

 clamp by two handles ; Collar held in special clamp. 



FIG. 15. An Oxygen Cylinder with Valve, Rubber FiG.i6. Apparatus for Analysis of Oxygen and Air. 



Pressure Bag, and Purifying Attachments. On 

 opening valve oxygen escapes through the metal 

 tube through the purifying attachments. If the 

 pressure is excessive, excess of gas enters bag. 



Two water-jacketed burrettes, B t and B, each with 

 water reservoirs, RI and Rj, are connected by the 

 3-way stopcock C. Pipette H is connected through 

 a capillary (T) with the apparatus. 



