MUNROE-HOWELL— PRODUCTS OF DETONATION OF TNT. 213 



Test No. 



M — 2354 



P— 1848 

 Weight of charge 350 grams. 



Temperature of gages before shot 15 liter 25° C. ; 20 Hter 24° C. 

 Temperature of gages after shot 15 hter 27° C. ; 20 hter 24° C. 

 Barometer 731 mm. 

 Observed gage pressure 9.48 kg. per sq. cm. 



Gas Analyses. 



Calculations. . . 



N in explosive, 350 X .1814 63.490 grams 



N in residual air 908 grams 



N in No. 8 electric detonator 158 grams 



Total N put in gage 64.556 grams 



N found in gases : Obs. pres. 9.48 kg. per sq. cm 6,977 mm. 



Barometer 731 mm. 



Abs. pres. in gage 7,7o8 mm. 



7708 X .01832 = 141.21"! ,. . 



^ ov, ^f 331-97 liters of gas. 



7658 X .02497 = 190.76 J ^^-^ ^^ « 



331.97 X .155 X 1.2542 = 64.535 grams N in gas. 



N put in gage 64.556 grams 



N found in gae 64.535 grams 



Difference — .021 grams 



Test No. 



M — 2354 



P-I857- 

 Weight of charge 400 grams. 



Temperature of gages before shot 15 hter 23° C. ; 20 hter 22° C. 



Temperature of gages after shot 15 hter 25° C. ; 20 hter 22° C. 



Barometer 731 mm. 



Observed gage pressure 10.79 ^S- P^^ sq. cm. 



PROC. AMER. PHIL. SOC, VOL. LIX, N, JULY 22, I92O. 



