DR. H. DEBUS ON THE CHEMICAL THEORY OF GUNPOWDER. 
587 
y= u > 
2= G, 
E'= 
13-91 
y =1 3, 
2= 6, 
E'= 
14-58 
y— 16, 
2= 6 , 
E' = 
15-46 
y= 21, 
2= 6, 
E'= 
16-62 
y— if 
2= 6 , 
E'= 
13*91 
y= n» 
2= 9-5, 
E'= 
14-41 
y= 14, 
2= 4, 
F/= 
14-63 
y= 14, 
2= 8, 
E'= 
15-11 
y=U, 
2 = 11 , 
E'= 
15-38 
y — iff 
2= 2-60, 
E'= 
15-11 
y= 16, 
2= 6, 
E'= 
15*46 
y= 16, 
2= 8, 
E'= 
15-63 
2/= 16, 
2= 12, 
E'= 
15"88 
y= is, 
2= 8, 
E'= 
16-09 
II 
1—* 
00 
2=13, 
E'= 
16-28 
o' 
CSl 
II 
5s 
2= 0, 
E'= 
16-03 
y= 20, 
2= 5, 
E'= 
16-37 
y—20, 
2— 9, 
E'= 
16-52 
y— 20, 
2=14, 
E'= 
16-59 
y= 21, 
2= 4, 
E'= 
16-54 
y= 21, 
2= G, 
E'= 
16*62 
y — 22, 
2= 8, 
E'= 
16-84 
y— 22 , 
2=15, 
E'= 
16-81 
y— 2 4, 
2=16, 
E'= 
16-95 
It follows from these numbers that E' becomes greater when y or 2 , or both simul¬ 
taneously, increase, but proportionately less so than is the case with weights of mixtures 
which contain equal weights of saltpetre, viz., 16 mols. 
The smallest value of E' is 13H8, the highest 16'95; hence the latter is about 
28 per cent, greater. 
The highest value of E, on the other hand, is more than 50 per cent, greater than the 
lowest. Further, it is apparent that for mixtures for which y and 2 assume high 
values the differences of E' become very small. 
The powder 
I 6 KNO 3 +I4C+4S 
differs from 
by 7 atoms of sulphur. 
I6KNO0 + UC + IIS 
