250 On Oxalic Acid. 



Now the gas was composed of 



Carbonic acid 10"5 cubic inches = 4*9 grains. 



Inflammable air 33*1 - - = 9*9 

 so that one-third of the weight was carbonic acid, and two- 

 thirds inflammabie air. If we divide the 5-4 grains of loss, 

 in that proportion we obtain rS grains carbonic acid, and 

 3-6 grains of inflammable air. Adding these quantities to 

 the weight obtained, we get for the weight of the whole 



gaseous product 



Grains. 

 Carbonic acid 6*7 



Inflammable air 13"5 



20- 



The 6'2"4 grains of residue in the retort were composed of 

 Lime - - 33-4 



Carbonic acid 26*4 



Charcoal - 2*6 



62-4 



iMow it is clear^ that the 89 grains of oxalate of lime were 

 composed of 



Lime - - 33-4 



Acid - - 53-6 



S90 



The acid was completely decomposed and resolved into 

 the following products : 



Carbonic acid 33" 1 

 Inflammable air 13*5 

 Water - - 6-4 



Charcoal - 2-6 



55-6 



Had the experiment been made upon 100 grains of oxalic 

 acid instead of 53*6, it is clear that the proportions would 

 have been as follows : 



Carbonic 



