| No. 2. | No. 3. | ||
| Date of Permit | 1-9-13 | 28-1-15 | |
| Nitroglycerine | 26 | 24 | 24·5 |
| Sodium nitrate | — | — | 28 |
| Potassium nitrate | 32·7 | 30 | — |
| Wood meal | 41 | 38 | 35·5 |
| Sodium carbonate | 0·3 | — | |
| Ammonium oxalate | — | 8 | — |
| Sodium chloride | — | — | 12 |
Limit charge | — | 24 | 24 oz. |
| Power (swing of ballistic pendulum) | — | 2·26 | 2·17” |
BROWN POWDER. See [COCOA POWDER].
BRUGÈRE’S POWDER consisted of—
| Ammonium picrate | 54 |
| Potassium nitrate | 46 |
It was stated to give good results in the Chassepôt rifle, but picrate mixtures are liable to detonate, and are therefore dangerous to use as propellants.
BULL DOG Gunpowder Pellets were used in coal mines. They contained the same constituents as [Bobbinite], which superseded them, but in different proportions.
Explosifs C were mixtures of ammonium cresylate with ammonium or sodium nitrate. They were made in France at one time, but their manufacture was dropped, as they were more expensive to make than [Grisounite], and no more powerful.
[CAHUECIT].—This was invented in the ’seventies of the last century by R. Cahuc, and was manufactured at Dartford in Kent under the name of [Safety Blasting Powder] or [Carboazotine]. It is still made in Germany. The ingredients are—
| English. | German. | |
| Potassium nitrate | 64 | 70 |
| Sulphur flowers | 12 | 12 |
| Lampblack or soot | 7 | 8 |
| Bark or wood pulp | 17 | 10 |
to which are added a few per cent. of sulphate of iron. The incorporation is carried out with the assistance of a considerable quantity of water, which is afterwards evaporated off. The mixing is not very thorough. The explosive is a comparatively mild one, but is used sometimes for blasting basalt. In the German explosive the potassium nitrate may be replaced by the corresponding sodium salt.