on the Diffusion of Gases, fyc. 79 



(2.) Receiver charged with 



Carbonic acid . . . 1021 = ^ 

 Hydrogen . . . 50 J 



With tube II. Position of receiver horizontal, mouth upwards. 

 After diffusing into the atmosphere for four hours, contained, 



Carbonic acid ' . . . 76 

 Hydrogen . ' . ' . . 10.3 

 Air .... 65.7 



152 

 (3.) Receiver charged with 



Carbonic acid . . . 761 j 52 

 Carbur. hydrogen (of marshes) 76 J 



Tube II, mouth upwards. After four hours, contained, 



Carbonic acid . . .57 

 Carbur. hydrogen . . 35.3 



Air . . ' . . ' . 59.7 



152 



Have left the receiver, 



Carbonic acid . . .19 

 Carbur. hydrogen . . . 40.7 



or, twice as much carburetted hydrogen as carbonic acid has 

 left the receiver. Of these gases individually, there left the 

 receiver in the same circumstances, 



Of Carbonic acid . . . 48 

 Carburetted hydrogen . . 66 



(4.) Receiver charged with 



Carbonic acid . . . 521 _ .,« 

 Carburetted hydrogen . . 100 J 10i5 



Position, &c. as in preceding experiment. After four hours, 

 contained, 



Carbonic acid . . .39 

 Carbur. hydrogen . . 51.6 



