CAPTAIN NOBLE AND MR. F. A. ABEL ON FIRED GUNPOWDER. 
273 
Experiment 184.—Exploded 400 grs, Spanish. 
O 
Temperature of calorimeter before explosion ■ 5 8'5 2 F. 
„ „ after „ . 75-03 „ 
Hence difference.16 0, 51-f 1°*35 = 17*86 „ 
Hence heat evolved = 7 71’3 gramme-units centigrade. 
Experiment 185.—Exploded 400 grs. Curtis and Harvey’s No. 6. 
o 
Temperature of calorimeter before explosion . 53T9 F. 
„ „ after ,, . 69’26 „ 
Hence difference.16°*07 +1°*31 = 17*38 „ 
Hence heat evolved = 750'6 gramme-units centigrade. 
Experiment 186.—Exploded 400 grs. Curtis and Harvey’s No. 6. 
° 
Temperature of calorimeter before explosion . 55'80 F. 
„ ,, after „ . 72 T9 „ 
Hence difference.16°*39 + 1°*33 = 17*72 „ 
Hence heat evolved= 765*3 gramme-units centigrade. 
Experiment 187.—Exploded 400 grs. Curtis and Harvey’s No. 6. 
O 
Temperature of calorimeter before explosion . 53*48 F. 
,, „ after „ . 69*58 ,, 
Hence difference.16 o T0+l°'32=17 - 42 „ 
Hence heat evolved= 752*3 gramme-units centigrade. 
Experiment 189.—Exploded 400 grs. F. G. 
o 
Temperature of calorimeter before explosion . 55*61 F. 
„ „ after „ . 71*26 „ 
Hence difference.15°*65 + 1°*28 = 16*93 „ 
Hence heat evolved = 731*1 gramme-units centigrade. 
Experiment 191.—Exploded 400 grs. F. G. 
Temperature of calorimeter before explosion . 
after 
53*04 F. 
68*49 „ 
Hence difference.15°*45-t-1°*27 = 16*7*2 
Hence heat evolved=722*l gramme-units centigrade. 
Experiment 192.—Exploded 400 grs. F. G. 
O 
Temperature of calorimeter before explosion . 53*95 F. 
„ „ after „ . 69*59 „ 
Hence difference.15°*64-|-1 0 *28 = 16*92 „ 
Hence heat evolved= 730*7 gramme-units centigrade, 
2 N 
MDCCCLXXX, 
