278 M. L. v. Karolyi on the Products of 



Vol. at 0° 

 and 1 metre 

 Volume. Pressure. Temp, pressure. 



Original volume . . . 120-12 0-3432 20*4 38-36 



After addition of air . . 198-51 0-4263 20'3 78-77 



After addition of oxygen. 230-33 0-4478 20'5 95-89 



After explosion . . . 201*14 0-4323 19*6 81*47 



After absorption of CO 2 . 189'46 0-4276 21-0 75-23 



After addition of H . . 261*02 04817 21'2 116*66 



After explosion . . . 174-20 0*4130 18'3 67*43 



If the formulae previously used be applied, we get 



Carbonic acid = 3*95, Marsh-gas = 2*29, 



Hydrogen = 5-24, and Nitrogen = 26*88. 



Hence the small-arms powder contains in 1 00 volumes — 



Carbonic acid .... 48*90 

 Sulphuretted hydrogen . 0*67 

 Carbonic oxide . . . . 5-18 

 Marsh-gas . . . . • . 3*02 



Hydrogen 6*90 



Nitrogen ...... 35*33 



100*00 



The solid residue in the mortar was treated with hot water and 

 the liquid filtered. No sulphide of potassium was found to be 

 present. The analysis was executed in the same manner as with 

 the ordnance powder. 



From the results of this analysis and from those of the gas- 

 analysis, direct measurement having shown that 34*153 grms. 

 of ordnance powder give 7738 cubic centims. of gas, the follow- 

 ing scheme for the products of combustion of the ordnance 

 powder may be given : — 



Sulphate of potash .... 12*354 

 Carbonate of potash .... 7*096 

 Hyposulphite of potash . . . 0*605 

 Charcoal ....... 0-887 



Sulphur 0-397 



Sesquicarbonate of ammonia . 0*908 



Nitrogen 3-432 



Carbonic acid 7*442 



Carbonic oxide . . . . . 0*504 



Hydrogen ....... 0*047 



Sulphuretted hydrogen . . . 0*079 



Marsh-gas 0-167 



Loss 0-235 



34*153 



