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gathered from the fmall bubbles 

 fcraped from the fkin by the edge 

 of a glafs, I gathered from another 

 young and healthy perfon the air 

 of the large bubbles found upon 

 the fkin, by plunging the arm fud^- 

 denly under the water. And I found 

 it approaching more to the nature 

 of common air, though a candle 

 could not have burned in it, nor 

 an animal breathe in it without 

 anxiety ; for one meafure of it 

 with one of nitrous air occupied 



CON- 



