212 



SIR ANDREW NOBLE: EESEARCHES ON EXPLOSIVES. 



Again, taking from Experiment 1416 an example of transformation at a high 

 pressure, a charge of 81 grammes (including lighter) of Mark I cordite fired under a 

 pressure of 22'5 tons per sq. inch (3429'8 atmospheres), the quantity of gas generated 

 after being reduced to C. and 760 millims. pressure was 54, 961 '5 cub. centims. 

 As before, the percentage in volumes of the permanent gases is shown in Column L, 

 of the total gas in Column III., and the respective weights of the total gases in 

 Column IV. 



The quantity of H 2 O collected was 11 '96 grammes = 14,878'2 cub. centims. aqueous 

 vapour at C. and 760 millims. 



These data give the quantity of permanent gases generated at 686 "4 cub. centims. 

 and the total gases at 869 - 7 cub. centims. per gramme. 



Proceeding to compare as before the elements in the cordite and in the exploded 

 gases, we have : 



