To Make An Eolian Harp

This instrument may be made by almost any carpenter: it consists of a long narrow box of very thin deal, about five or six inches deep, with a circle in the middle of the upper sid...

Yrd Science Experiments
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To Soften Iron Or Steel

Either of the following simple methods will make iron or steel as soft as lead: 1. Anoint it all over with tallow; temper it in a gentle charcoal fire, and let it cool of itself. 2...

Yrd Science Experiments
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To Make Moulds Of Horn

If you wish to take the impression of any coin, medal, &c., previously anoint it with oil; then lay the horn shavings over it in its softened state. When dry, the impression will b...

Yrd Science Experiments
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The Transmuted Cards

In a common pack of cards let the ace of hearts and nine of spades be something larger than the rest. With the juice of lemon draw over the ace of hearts a spade, large enough to c...

Yrd Science Experiments
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To Fire Rockets Without Sticks You Must Have A Stand Of A Block

of wood, a foot diameter, and make the bottom flat, so that it may stand steady: in the centre of the top of this block draw a circle two inches and a half diameter, and divide the...

Yrd Science Experiments
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The Card Discovered By The Touch Or Smell

You offer the long card, or any other that you know, and as the person who has drawn it holds it in his hand, you pretend to feel the pips or figure on the under side, by your fore...

Yrd Science Experiments
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To Make Touch Paper

Dissolve in some spirits of wine or vinegar, a little saltpetre; then take some purple or blue paper, wet it with the above liquor, and when dry it will be fit for use. When you pa...

Yrd Science Experiments
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To Remove Stains And Blemishes From Prints

Paste a piece of paper to a very smooth clear table, that the boiling water used in the operation may not require a colour which might lessen its success. Spread out the print you...

Yrd Science Experiments
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To Melt A Piece Of Money In A Walnut-shell Without Injuring The

shell. Bend any thin coin, and put it into half a walnut-shell; place the shell on a little sand, to keep it steady. Then fill the shell with a mixture made of three parts of very...

Yrd Science Experiments
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Water-rockets

They may be made from four ounces to two pounds. If larger, they are too heavy; so that it will be difficult to make them keep above water without a cork float, which must be tied...

Yrd Science Experiments
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To Make Luminous Writing In The Dark

Fix a small piece of solid phosphorus in a quill, and write with it upon paper; if the paper be carried into a dark room, the writing will appear beautifully luminous.

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The Magician's Mirror

Construct a box of wood, of a cubical shape, A B C D, Fig. 23, of about fifteen inches every way. Let it be fixed to the pedestal P, at the usual height of a man's head. In each si...

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The Revolutions Of The Heavenly Bodies Forming What Is Called The Electrical Orrery Let A Single Wire With The Extremities Point

and turned, be nicely balanced on a point; fix a small glass ball over its centre to represent the sun. At one extremity of the wire, let a small wire be soldered perpendicularly,...

Yrd Science Experiments
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Weather Table

--------------------+---------------------+------------------------ NEW AND FULL MOON. SUMMER. WINTER. --------------------+---------------------+------------------------ If the ne...

Yrd Science Experiments
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The Penetrative Guinea

Provide a large tin box, of the size of a large snuff-box, and in this place eight other boxes, which will go easily into each other, and let the least of them be of a size to hold...

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The Pressure Of Water

The pressure of water may be known to every one who will only take the trouble to look at the cock of a water-butt when turned: if the tub or cistern be full, the water runs with m...

Yrd Science Experiments
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To Tell The Card That A Person Has Touched With His Finger

This amusement is to be performed by confederacy. You previously agree with your confederate on certain signs, by which he is to denote the suite, and the particular card of each s...

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The Four Confederate Cards

A person draws four cards from the pack, and you tell him to remember one of them. He then returns them to the pack, and you dexterously place two under and two on the top of the p...

Yrd Science Experiments
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To Make A Rocket Form An Arch In Rising Having Some Rockets Made

headed according to fancy, and tied on their sticks, get some sheet tin, and cut it into round pieces about three or four inches diameter; then on the stick of each rocket, under t...

Yrd Science Experiments
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To Tell The Amount Of The Numbers Of Any Three Cards That A Person

shall draw from the Pack. After the person has drawn his three cards, draw one yourself and lay it aside, for it is necessary that the number of the remaining cards be divisible by...

Yrd Science Experiments
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To Tell The Amount Of The Numbers Of Any Two Cards Drawn From A

common Pack. Each court card in this amusement counts for ten, and the other cards according to the number of their pips. Let the person who draws the cards add as many more cards...

Yrd Science Experiments
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To Make Several Rockets Rise Together Take Six Or Any Number Of

sky-rockets, of any size; then cut some strong packthread into pieces of three or four yards long, and tie each end of these pieces to a rocket in this manner: Having tied one end...

Yrd Science Experiments
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White Ink For Writing On Black Paper

Having carefully washed some egg-shells, remove the internal skin, and grind them on a piece of porphyry. Then put the powder into a small vessel of pure water, and when it has set...

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The Alteration As The A Into D The C Into A E D G O Or Q The I Into B D Or L The L Into T The O

into a, d, g, or q; the v into y, &c. Take a parcel of cards, suppose twenty, and on one of them write with juice of lemon or onion, or vitriol and water, the word law, (these lett...

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The Long Card Another Stratagem Connected With The Performance Of

many of the following tricks, is what is termed the Long Card; that is, a card, either a trifle longer or wider than the other cards, not perceptible to the eye of the spectator, b...

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The Miraculous Luminaries

You must previously prepare the following phosphorus: Calcine common oyster-shells, by burning them in the fire for half an hour; then reduce them to powder; of the clearest of whi...

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To Diversify The Colours Of Flowers

Fill a vessel of what size or shape you please, with good rich earth, which has been dried and sifted in the sun, then plant in the same a slip or branch of a plant bearing a white...

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To Spin Sealing-wax Into Threads By Electricity

Stick a small piece of sealing-wax on the end of a wire, and set fire to it. Then put an electrical machine in motion, and present the wax just blown out at the distance of some in...

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To Name The Rank Of A Card That A Person Has Drawn From A Piquet

Pack. The rank of a card means whether it be an ace, king, queen, &c. You therefore first fix a certain number to each card; thus you call the king four, the queen three, the knave...

Yrd Science Experiments
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To Tell A Person Any Number He May Privately Fix On

When the person has fixed on a number, bid him double it and add four to that doubling; then multiply the whole by 5; to the product let him add 12, and multiply the amount by 10....

Yrd Science Experiments
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