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Updated: May 27, 2025
In their long journeys, the putters stop to "bait," and are well supplied with bread and cheese, and bacon, and cold coffee or tea. The miner has not only to fear choke or fire-damp, but sometimes water. A mine has, therefore, to be drained. A well or tank is dug in the lowest level, into which all the springs are made to run.
Fire-damp, marsh-gas, or carburetted hydrogen, is colorless, almost scentless; it burns with a blue flame, and makes respiration impossible. The miner could not live in a place filled with this injurious gas, any more than one could live in a gasometer full of common gas.
He was clothed in a dark mantle, his hair was dishevelled, a long white beard fell over his breast, and in his hand he bore a lighted Davy safety lamp, the flame being protected by the metallic gauze of the apparatus. In a loud voice this old man shouted, "The fire-damp is upon you! Woe woe betide ye all!"
To accidents as they come down or go up the shafts by the breaking of ropes, or the giving way of machinery, from the falling in of the roof or walls, as also from accidents in blasting, from spontaneous combustion, from explosion of fire-damp, suffocation from choke-damp, and eruptions of water, and even quicksands.
He also discovered various metals, including sodium, calcium, and magnesium. In 1812 he was knighted, and m. a wealthy widow. Thereafter he investigated volcanic action and fire-damp, and invented the safety lamp. In 1818 he was cr. a baronet, and in 1820 became Pres. of the Royal Society, to which he communicated his discoveries in electro-magnetism.
"That missioner chap put me off it, and that's what I won't stand, so I'm going to have it now." "What can make you think of such a mad thing, Bill?" exclaimed Samuel. "You know it's against orders to light a pipe, and good reason too, for a spark might blow us all to pieces in a moment. I smell the fire-damp at this moment, you haven't got matches, I hope?"
When, at Pavia, he first met Volta: he found that Volta had put on full-dress to receive him. In August, 1815, Davy's attention was drawn to the loss of life by explosions of fire-damp, and by the end of the year he had devised his safety-lamp. The coal owners subscribed 1,500 pounds for a testimonial, gave him also a dinner and a service of plate. In October, 1818, he was made a baronet.
Harry took the stick, and successively presented the lamp to the different fissures in the rock; but he shook his head, for of that slight crackling peculiar to escaping fire-damp he heard nothing. There was no flame. Evidently not a particle of gas was escaping through the rock. "Nothing!" cried Ford, clenching his fist with a gesture rather of anger than disappointment. A cry escaped Harry.
The object of the present paper is to show that with the assistance of the fire-damp detecter, the tin shield, or any other description of lamp, is made as sensitive as the Davy, while its other advantages of resisting velocity, etc., are not in any way interfered with. As a proof of this I may mention that a deputy of experience recently visited a working place to make his inspection.
"Let us see if any change has taken place, and if the fire-damp still escapes through the crevices." "You are right, Mr. Starr," said Harry. "Whoever stopped it up yesterday may have done it again to-day!" Madge, seated on a rock, carefully observed the excavation, and the wall which was to be blasted. It was found that everything was just as they left it.
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