on the Diffusion of Gases, fyc. 

 Have left the receiver, 



81 



Olefiant gas 

 Carbur. hydrogen 



28.25 

 34.60 



III. — Diffusion of Gases into other Atmospheres than common 



Air, 



(1.) A phial, A, of 5.2 cubic inches, provided with a per- 

 forated cork, was filled with an intimate mixture of olefiant 

 and hydrogen gases in equal proportions. The phial being 

 held with its mouth undermost, a glass tube of 0.12 inch bore 

 was thrust through the cork, and likewise quickly inserted into 



Fig. I. 



A 



the perforated cork of another bottle, B, of 37 cubic inches, 

 containing carbonic acid gas. The whole was then sunk in 

 water, till the surface of the water, a a, {Fig. 2.) rose above 

 the joinings. After ten hours, the upper phial was removed, 

 and its contents washed with lime-water. There remained a 

 mixture, consisting of 



Olefiant gas 

 Hydrogen 



12 

 3.1 



There can be no doubt that the olefiant gas would have been 

 obtained in a state of greater purity, had not the diffusion of 

 JULY— SEPT., 1829. . G 



