CAPTAIN - NOBLE AND MR, F. A. ABEL ON FIRED GUNPOWDER. 
205 
We now proceed to the discussion at length of these points, prefacing our remarks 
by Tables I. and II. hereto annexed. 
The former of these tables, in addition to giving the results of one or two analyses 
which had not been completed when our first memoir was published (we have not con¬ 
sidered it necessary to repeat the portions of this table already published), shows the 
mean percentage composition, by volume, of the gases, and the mean percentage 
composition, by weight, of the solid residues for each of the three principal powders 
examined by us. It also shows the highest and lowest proportions in which, with each 
powder, any particular product occurs, and gives the results obtained from the exami¬ 
nation of the products of combustion of four descriptions of powder differing in many 
respects from the powders which formed the main subject of our memoir. 
Table II. contains the complete results of all our analyses; it shows the proportion 
by weight of each solid and gaseous product, and includes also the amount of water 
pre-existent in the various specimens of powder operated on. 
