92 
CAPTAIN NOBLE AND ME. E. A. ABEL ON El RED GUNPOWDER. 
If we perform similar calculations in the case of experiment 17, when 205-542 grms. 
of F. G. were exploded, and the products found to he of the undermentioned 
composition : — 
Solid Products. 
vV 
Gaseous 
Products. 
r~ 
k 2 co 3 . 
. -5939 
(NH 4 ) 2 C0 3 . 
. -0015 
sh 2 . 
'i 
Yol. 
. -0376 
K 2 b 2 Og . 
. -0530 
s . . . . 
. -0572 
co" . 
. -1235 
k 2 so 4 . 
. *2422 
co 2 . 
. *4741 
k 2 s . . 
. -0512 
ch 4 . 
KC NS . 
. *0002 
H . . 
. -0413 
kno 3 . 
. -0008 
N . . 
. -3235 
we obtain: — 
For solid products .... 119-554 grms. = ‘5817 
For gaseous products . . . . 85‘987 grms. = '4188 
or, resolving these products as before into their elements : — 
Grms. 
K. 
C. 
S. 
H. 
O. 
X. 
K,C0 3 
71-003 
40-117 
6-177 
24-709 
k 2 s 2 o 3 
6-336 
2-604 
2-135 
1-597 
k“so 4 
28-956 
12-Q72 
5-328 
10-656 
k” s 
6-121 
4-340 
1-781 
KCNS 
•024 
•010 
•003 
•008 
•003 
kno 3 
•096 
•037 
•045 
•013 
(NH j 2 CO, 
•179 
•022 
•015 
•090 
•052 
c :. 
s 
6-839 
6-839 
Total solid 
119*554 
60-080 
6-202 
16-091 
•015 
37-097 
0-068 
SH 
3-164 
2-977 
•187 
CO‘ 
8-556 
3-671 
4-885 
CO 
51-644 
14-099 
37-545 
CH 
H 4 
•206 
•206 
N 
22-417 
22-417 
Gaseous 
85-987 
17-770 
2-977 
•393 
42-430 
22-417 
Solid 
119-554 
60-080 
6-202 
16-091 
•015 
37-097 
0-068 
Found originally in 
205-541 
60-080 
23-972 
19-068 
•408 
79-527 
22-485 
powder 
205-542 
58-662 
23-349 
20-760 
1-336 
79-031 
22-700 
Errors 

+ 1-418 
+ 0-623 
-1-692 
-•928 
+ •496 
-•215 
It will be seen from this comparison that the results, when the nature of the 
analysis is taken into consideration, accord with great exactness. The volume of the 
gaseous products, calculated from the weight of the gases given in the first column of 
the Table, would be about 279 cub. centims. at 0° C. and 760 millims. per gramme of 
powder in the case of the pebble, and 267 cub. centims. in the case of the F. G. powder. 
These volumes are slightly more than the measured volumes ; but it must be remembered 
