MUNROE-HOWELL— PRODUCTS OF DETONATION OF TNT. 211 



Calculations. 



N in explosive, 200 X -1814 36.280 grams 



N in residual air 899 grams 



N in No. 8 electric detonator 158 grams 



Total N put in gage 37-337 grams 



N found in gases: Obs. pres. 13.79 kg- per sq. cm 10.150 mm. 



Barometer 726 mm. 



Abs. pres. in gage 10.876 mm. 



10876 X .01825 = 198.49 liters of gas. 



198.49 X .15 X 1.2542 = 37.342 grams N in gas. 



N put in gage 37-337 grams 



N found in gas 37-342 grams 



Difference +-005 grams 



Test No. 



M — 2354 



P— 1841* 

 Weight of charge 250 grams. 

 Temperature of gages before shot 26° C. 



Temperature of gages after shot, 15 Hter, 28° C. ; 20 liter, 26° C. 

 Barometer y2y mm. 

 Observed gage pressure 6.69 kg. per sq. cm. 



Gas Analyses. 



Calculations. 



N in explosive, 250 X .1814 45-350 grams 



N in residual air f .905 grams 



N in No. 8 electric detonator 



215 grams 

 158 grams 



Total N put in gage 47.628 grams 



N found in gases : Obs. pres. 6.69 kg. per sq. cm 4,924 mm. 



Barometer 727 mm. 



Abs. pres. in gage 5,651 mm. 



