Lectures On Explosives: a Course of Lectures Prepared Especially As a Manual ...
Lectures On Explosives: a Course of Lectures Prepared Especially As a Manual ...
Willoughby Walke
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2.19 2.26 £.24 2.28 2.24 99.66 '* The charcoal contained : I II III Mean. Carbon 48.43 4^. 17 48-39 48-33 Hydrogen 5.58 5.60 5.53 5.57 Oxygen 44.64 44-93 44-75 44 77 Ash 1.35 1.30 1.33 1.33 100.00 Hosted by Google GUNPOWDER, 97 ** It is to be seen by these analyses that the cocoa powder differs markedly from the U. S. regulation powder — ** 1st. In the proportions of the ingredients: U. S. Regulation Powder. Nitre 7S.OO Charcoal 15 .00 Sulphur 10.00 100.00 *'2d. In the character of the charcoal..., which is red in- stead of black. ** In order to learn more of the nature of the charcoal, a partial analysis of the ash was made. The ash was red- colored. It yielded: Silica 13.93 Ferric oxide 25.40 Alumina 8.32 Lime 28.50 Magnesia 7.28 Undetermined 16.57 100.00 *'The presence of alumina in the ash seems to point to the club-moss or some similar lycopodiaceous plant as the source of the charcoal.'' Properties Peculiar to Cocoa Powder. — One noteworthy peculiarity of cocoa powder is its velocity of combustion, which is so low that a grain may be held in the hand and ignited, and then placed on the ground before the burning portion reaches the fingers.
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