MUNROE-HOWELL— PRODUCTS OF DETONATION OF TNT. 209 



Temperature of gage before shot 28° C. 

 Temperature of gage after shot 28.5° C, 

 Barometer 729 mm. 

 Observed gage pressure 6.81 kg. per sq. cm. 



Gas Analyses. 



Calculations. 



N in explosive, 100 X .1814 18.140 grams 



N in residual air 899 grams 



N in No. 8 electric detonator 158 grams 



Total N put in gage 19-197 grams 



N found in gases : Obs. pres. 6.81 kg. per sq. cm 5,oi2 mm. 



Barometer 729 mm. 



Abs. pres. in gage 5,741 mm. 



5741 X .01826= 104.83 liters of gas. 



104.83 X .145 X 1.2542 = 19.064 grams N in gas. 



N put in gage I9-I97 grams 



N found in gas 19.064 grams 



Difference — .133 grams 



Test No M^^^i4 

 P— 1863- 



Weight of charge, 150 grams. 



Temperature of gage before shot 25° C. 



Temperature of gage after shot 26° C. 



Barometer 738 mm. 



Observed gage pressure 10.83 ^^- per sq. cm. 



