Theory of Gunpoivder. 497 



equal volumes, one of which was used to each for the following 

 detenninatious : — 



1. Charcoal. — The charcoal contained in the whole liquid 

 weighed 008536 grm., and was free from sulphur. Hence 

 0-00775 grm. corresponds to one part of the liquid. 



2. Sulphide of Potassium. — The solution did not blacken lead 

 paper, and contained therefore no sulphide of potassium. 



3. Hyposulphite of Potash. — One volume of the liquid required 

 1 1 degrees of the standard solution, corresponding therefore to 

 0'02045 grm. hyposulphite of potash. 



4. Sulphate of Potash. — One part of the liquid gave 0-3650 

 grm. sulphate of baryta, which corresponds to 0-2726 grm. sul- 

 phate of potash. 



5. Sulpliocyanide of Potassium. — One volume of the liquid 

 required 4-7 degrees of the standard solution, corresponding to 

 0-0023 sulphocyanide of potassium. 



6. Ammonia. — Two parts of liquid gave t^ = 27*0, / = 23-9, 

 a = 0-05612, which corresponds to 0-0004373 sesquicarbonate 

 of ammonia, or to 0-0002445 carbonic acid for one volume of 

 liquid. 



7. Nitrate of Potash. — One part of liquid gave /j = 27-0, 

 if = 25-2, a = 0-05612, which corresponds to 0010374 nitre. 



8. Carbonate of Potash. — Two parts of liquid gave 00629 

 carbonic acid, which after subtracting the carbonic acid of the 

 carbonate of ammonia in experiment (6), corresponds to 0-09803 

 grm. carbonate of potash. 



9. Hijdrate of Potash. — Two parts of liquid gave 0-1169 grm. 

 manganoso-manganic oxide, which corresponds to 0-05845 for 

 one part liquid. Subtracting therefrom the quantity of Mn^ 0* 

 (0-05466), equivalent to the carbonic acid of experiment (8), 

 there remains 000379 grm. Mn^O"*, which corresponds to 

 0-00556 hydrate of potash. 



Therefore, according to these experiments, there are contained 

 in one part of the liquid, — 



Sulphate of potash . . . 0-27258 



Carbonate of potash . . . 0-09803 



Hyposulphite of potash . . 0-02045 



Sulphide of potassium . . 0-00000 



Hydrate of potash . . . 0-00556 



Sulphocyanide of potassium. 0-00230 



Nitrate of potash .... 0-01037 



Charcoal 0-00775 



Sesquicarbonate of ammonia 0-00044 



Sulphur 0-00000 



0-41748 



