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Updated: June 5, 2025
At a certain moment the hand will have exhausted its effort, and, at this very moment, the filings will be massed and coördinated in a certain definite form, to wit, that of the hand that is stopped and of a part of the arm. Now, suppose that the hand and arm are invisible. Lookers-on will seek the reason of the arrangement in the filings themselves and in forces within the mass.
It appears thus that the advantage of the iron diaphragm over iron filings reduces itself to presenting in a certain volume a much more considerable number of magnetic molecules to the action of the field. The iron diaphragm increases the telephonic intensity, but it is by no means indispensable. By H.N. WARREN, Research Analyst.
To render a loadstone, which lifts filings of iron by its magnetic force, capable of doing the same by the force of gravity, its density would have to be increased more than a thousand million times. All forces differ in like degree. Professor Faraday calculated that the force latent in the chemical composition of one drop of water, equals that manifested in an average thunderstorm.
One of the best known of these is a tube arranged in a somewhat similar manner to the filings tube but with two small blocks of tin, between which is placed a paste made up of alcohol, tin filings and lead oxide.
Ah! now I know where he goes to pilfer iron filings, which he sells for old papers, that barterer of a Garoffi! When we arrived in front of the door, we saw Precossi seated on a little pile of bricks, engaged in studying his lesson, with his book resting on his knees. He rose quickly and invited us to enter.
As a mild example of the "choice and experimented," I transcribe "An Approved Remedy for Biting of a Mad Dog": "Take a quart of Ale, and a dram of Treacle, a handful of Rue, a spoonful of shavings or filings of Tin. Boil all these together, till half be consumed. Take of this two spoonfuls in the morning, and at night cold. It is excellent for Man or Beast." I need not continue.
Several rows were thus piled up, and the apparatus was then pronounced to be at 'high pressure'. The tub was filled with water, to which were sometimes added powdered glass and iron filings. There were also some dry tubs, that is, prepared in the same manner, but without any additional water.
To get those precious filings accepted! That was all that worried him now. Prior to his visit to Homer Dunstan, this task had seemed to Bob the least of his worries compared with the titanic task of accumulating the money necessary to pay for the land when the filings should be approved.
Let it grow sour in a warm place, mix with it some fine iron filings, form the mass into small balls, and put them into the holes frequented by the mice. On eating this preparation, they are inevitably killed. Cats, owls, or hedgehogs, would be highly serviceable in places infested with mice. An effectual mousetrap may be made in the following manner.
"Black magic," repeated Flambeau in a low voice, for he was too enlightened a man not to know of such things; "but what can these other things mean?" "Oh, something damnable, I suppose," replied Brown impatiently. "How should I know? How can I guess all their mazes down below? Perhaps you can make a torture out of snuff and bamboo. Perhaps lunatics lust after wax and steel filings.
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