72, Modern Cannon Powder. [January, 
that caused by R.L.G., has at the same time augmented 
their power to a very considerable extent, as shown in the 
following table :— 
Mean pressure 
Nature of per square : Total ener 
Gia: Charge, lbs. inchianiisowder Muzzle velocity. ofaked sy 
chamber. 
FSO OO ~~ OS 
R.L.G. Pebble. R.L.G. Pebble. R.L.G. Pebble. R.L.G. Pebble. 
Lbs. Lbs. Tons. Tons. Feet. Feet. Ft.-tons. Ft.-tons. 
12 inch, 25 tons 67 85 23 19 T180 3300 5793 7030 
1G) fp si gq — (ayo) 70 32 23 1298 1364 4693 5160 
9 » I2 wy 43 50 21 15 1336 1420 3094 3496 
8 oy Oty) ao 35 30 20 1363 1413 2319 ©2492 
ht Oe 2 30 17 10 1430 1525 1631 1855 
With this, the result of the experiments of the last 
fourteen years, we will leave the subject, though there are 
many other points of scientific and practical interest to 
artillerymen which have been set at rest by the committee’s 
researches, while there are others which they are at the 
present moment investigating. 
At one period, as we have already stated, this country 
was allowed to fall behind some foreign nations in the all 
important question of powder for heavy guns, and the 
capabilities of our magnificent Naval O:dnance were 
sacrificed, and their endurance endangered, by the use of a 
variable and violent powder. All this has now been set 
right, and it is satisfactory to feel that our ships and forts 
are not only armed with the best guns in existence, but 
that they are also being rapidly supplied with a powder in 
every respect suitable for their use. 
