510 



Lord Ely ths wood and Mr. H. ■ S. Allen on 



§ 22. Two experiments were made with the same absorber 

 starting from a pressure that was nearly atmospheric. The 

 results of these and the former experiments are summarized 



Ffc. 3. 



•0300 



£ -oioo 



cj -0090 



•0080 



■0070 



■0060 



•0040 



•0030 



■0010 



20 25 30 



Time in Mjnutes. 



Rate of Absorption of Air by Charcoal. 

 McLeod Gauge. 



Experiment with 



in Table VII. and in figs. 3 and 4; and it is unnecessary to 

 enlarge upon them. We need only note that the rate of 

 absorption is practically constant, and that the final pressure 



