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Updated: June 2, 2025
Accordingly, he took one of these vessels of infusion, which had been kept eighteen months, without the least appearance of life, and by a most ingenious contrivance, he managed to break it open and introduce such a ball of gun-cotton, without allowing the infusion or the cotton ball to come into contact with any air but that which had been subjected to a red heat, and in twenty-four hours he had the satisfaction of finding all the indications of what had been hitherto called spontaneous generation.
Harding preferred, therefore, to manufacture pyroxyle, that is to say gun-cotton, a substance in which cotton is not indispensable, as the elementary tissue of vegetables may be used, and this is found in an almost pure state, not only in cotton, but in the textile fiber of hemp and flax, in paper, the pith of the elder, etc.
A torpedo, then, is a pretty large case, or box, or cask, or reservoir, of one form or another, filled with gunpowder, or gun-cotton, or dynamite, which is used chiefly under water, for blowing-up purposes. Sometimes men use torpedoes to blow up rocks, and sunken wrecks; and sometimes, I grieve to say it, they blow up ships and sailors."
This powerful cable, which could have held an iron-clad, was snapped in twain like a piece of thread by the explosion against it of only two and a half pounds of gun-cotton. "Very well done," I said to Firebrand, "but I think that a much smaller quantity of dynamite would have done it as effectively."
After the 343 made port the injured were handed over to the sick bay of the flag-ship. There were two of them who must have been pretty handy to the storm centre of the explosion. At least, it took two young surgeons on the flag-ship all of one day to pick the gun-cotton out of their backs. There was another man.
"But tell me how it works," she insisted, not because she had the slightest genuine interest in the technical details of war for she had not but because she desired to help him to change the mood of the scene. "Well, it's not so easy, you know. It was a four and a half pound shell, filled with gun-cotton slabs and shrapnel bullets packed in sawdust.
At last, Providence being propitious, this wonderful loading came to a happy termination, Captain Nicholl's third bet being thus lost. It remained now to introduce the projectile into the Columbiad, and to place it on its soft bed of gun-cotton. But before doing this, all those things necessary for the journey had to be carefully arranged in the projectile vehicle.
He, accordingly, constructed a very ingenious apparatus to enable him to accomplish the trapping of the "germ dust" in the air. He fixed in the window of his room a glass tube, in the centre of which he had placed a ball of gun-cotton, which, as you all know, is ordinary cotton-wool, which, from having been steeped in strong acid, is converted into a substance of great explosive power.
One operation alone remained to be accomplished to bring all to a happy termination; an operation delicate and perilous, requiring infinite precautions, and against the success of which Captain Nicholl had laid his third bet. It was, in fact, nothing less than the loading of the Columbiad, and the introduction into it of 400,000 pounds of gun-cotton.
The gunpowder is composed of carbon and other substances, making it highly combustible; and the gun-cotton is another combustible preparation. They are both waiting, but they will start into activity at different degrees of heat, or under different conditions. How beautifully that shews you the difference in the degree in which bodies act in this way!
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