t6 



ON OXALIC ACID. 





Measures of 

 inflammable 

 gas consumed 



^Teasures f i 



)xigen con 



spmeH. 



'4p;)snre r 



■irbcinc:; 



rorni'^d 



63 

 30 



nninulion 



38-5 

 6o-o 



Carbonic oxide 



Carburetted hi- 



dio£>^en • • • • 



70 

 30 



31-5 

 600 



Total •• 



100 



91-5 



93 



9S-5 



retted liidro- 

 gen. 



It was a mix- This coincidence is so exact, that I do not liesitate to con- 

 bonic oxide^ " ciiide, that tlie Inflammable gas, which was the suljject cf 

 andSOcarbu- experiment, was in reality a mixture of 70 parts of carbo- 

 nic oxide, and 30 of carburetted hidrogen. The specific 

 gravity indeed, which was 0*908, does not exactly agree with 

 the specific gravity of such a mixture; for 2V measures of 

 carbonic oxide, and one measure of carburetted bidrogen, 

 ought to form a mixture of the specific gravity 0-849, P'o- 

 vided the specific gravity of carbonic oxide be 0*956, and 

 that of carburetted bidrogen 0'600 ; but this objection can- 

 not be admitted to be of much weight, till the specific gra- 

 vity of pure carburetted bidrogen is ascertained with more 

 accuracy than has hitherto been done. 



The results contained in the preceding table enable us 

 to determine the composition of this iiiflamni;)ble air with 

 considerable precision ; for 100 cubic inches of it require 91 

 inches of oxigen, and form 93 cubic inches of carbonic acid. 

 But it is known, that carbonic acid gas requires for its for- 

 mation a quantity of oxigen gas equal to its own bulk:' 

 therefore to form 93 inches of i1, 93 inches of oxigen gas 

 must have been employed ; but only Ql were mixed with 

 the' gas : therefore the gas itself must have i'urnished a 

 quantity of oxigen, equivalent to the bulk of two cubic 

 inches, beside all the carbon contained in 93 inches of car- 

 bonic acid. 



lU composi- 

 tion. 



This carbon amounts in weight to • • 12-0!) grains. 

 Two cubic inches of oxigen weigh* • 'tis 



Total ]i>77 



B^t 



