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Updated: June 10, 2025
There'll be lots of them flying about before you're old, my boy, and doubtless you'll get your share of gunpowder or nitro-glycerine if you go on as you have begun. If I weren't afraid of making you cocky, I'd tell you what they say about you down at that Sandhurst shop, where I have an old pal or two."
Then again, Ralph did not know that it was against the laws of any town to convey nitro-glycerine through its streets, and that, in thus moving his quarters, Bob not only ran the chance of being pursued by the torpedo detectives, but also by the authorities of the town through which he must pass in order to get to his new camp.
But, as this would not explode without the addition of some oxygen-bearing element, various oxygen-bearing salts were combined with it, such as nitrate of potassium, nitrate of ammonia, nitrate of baryta, etc. Also a great many of the first smokeless powders were made of low grade gun-cotton combined with nitro-glycerine in varying proportions.
She recollected how Holmes had taken her just before his arrest to a house he had rented at Burlington, Vermont, how he had written asking her to carry a package of nitro-glycerine from the bottom to the top of the house, and how one day she had found him busily removing the boards in the cellar.
When nitro-glycerine was first combined with gun-cotton in small quantities, camphor was often added, to lessen the rapidity of combustion which the nitro-glycerine was supposed to impart and also to render the compound more plastic, and to tend to prevent the decomposition of the low grade gun-cotton.
Nevertheless, such is the compound which has come to stay as the basis of all smokeless powders; and any smokeless powder, if a successful one, may be counted upon as being made of this compound of gun-cotton and nitro-glycerine, or of a colloid of gun-cotton, either alone or combined with diluents, oxygen-bearing salts, or inert matter.
"But, doctor," asked Boston, as he leaned against the rail for support, "wouldn't there be evolution of heat from the action of the acids on the lime enough to explode the nitro-glycerine just formed?" "The best proof that it did not explode is the fact that this hull still floats. The action was too slow, and it was very cold down there. But I can't yet account for the acids left in the bilges.
"Just an explosion of about twenty pounds of nitro-glycerine about as close to us as I ever care to have it," said Mr. Post. "Yes, and if it hadn't been for Josh, I don't know where you boys would be now," put in Mr. Baker. "He saved your lives, all right. That's what he did." "It wasn't anything," the miner interposed.
The fresh air soon blew away their headaches, caused by the fumes from the nitro-glycerine, which was the basis of the powder. Dynamite will often produce a headache in those who work with it. Two days later Tom and Ned set off for Sandy Hook. This long, neck-like strip of land on the New Jersey coast is, as most of you know, one of the principal defenses of our country.
During the first two miles of their journey, there was nothing to which the most careful person could have taken objection, unless, indeed, it was the fact of riding behind a carriage loaded with nitro-glycerine, which was by no means a pleasant thing to do, and then the little town of Sawyer was reached.
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