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All Science Experiments Page 24
To Tell Any Number A Person Has Fixed On Without Asking Him Any
Questions. You tell the person to choose any number from 1 to 15; he is to add 1 to that number, and triple the amount. Then, 1. He is to take the half of that triple, and triple that half. 2. To take the half of the last triple, and triple t...
To Tell By A Watch Dial The Hour When A Person Intends To Rise
The person is told to set the hand of his watch at any hour he pleases, which hour he tells you; and you add in your mind 12 to it. You then desire him to count privately the number of that addition on the dial, commencing at the next hour to that a...
To Tell How Many Cards A Person Takes Out Of A Pack And To Specify
each Card. To perform this, you must so dispose a PIQUET pack of cards, that you can easily remember the order in which they are placed. Suppose, for instance, they are placed according to the words in the following line, Seven Aces, Eight Kin...
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 three, which they will not be in a pack of fifty-two cards, if only...
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 to each of those he has drawn as will make each of their numbers twe...
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 suite; thus: if he touch the first button of his coat, it signifies an...
To Tell The Number Of Points On Three Cards Placed Under Three
different Parcels of Cards. You first premise that the ace counts for eleven; the court cards ten each; and the others according to the number of their pips. You then propose to any person in company to choose three cards, and to place over each as...
To Tell The Number Of The Cards By Their Weight
Take a parcel of cards, suppose forty, among which insert two long cards; let the first be, for example, the fifteenth, and the other the twenty-sixth from the top. Seem to shuffle the cards, and then cutting them at the first long card, poise those...
Two Figures One Of Which Blows Out And The Other Re-lights A
Candle. Make two figures, of any shape or materials you please; insert in the mouth of one a small tube, at the end of which is a piece of phosphorus, and in the mouth of the other a tube containing at the end a few grains of gunpowder; taking care...
Two Inodorous Bodies Become Very Pungent And Odorous By Mixture
When equal parts of muriate of ammonia and unslaked lime, both substances destitute of odour, are intimately blended together in a mortar, a very pungent gas (ammonia) becomes evolved. ...
Vegetable Air-bubbles
Put a small branch of the tree with its leaves, or part of a small plant, in a vessel of water, and, placing the vessel in the receiver, exhaust the air. When the pressure of the external air is taken off, the spring of that contained in the air-...
Water Boiled By Air
Take water made so warm that you can just bear your hand in it, but that has not been boiled; put it under the receiver, and exhaust the air. Bubbles of air will soon be seen to rise, at first very small, but presently become larger, and will be at ...
Water Colder Than Ice
Put a lump of ice into an equal quantity of water, heated to 176 degrees, the result will be, that the fluid will be no hotter than water just beginning to freeze; but if a little sea salt be added to the water, and it be heated only to 166 or 170, ...
Water Fire-fountains
To make a fire-fountain for the water, first have a float made of wood, three feet diameter; then in the middle fix a round perpendicular post, four feet high, and two inches diameter; round this post fix three circular wheels made of thin wood, wit...
Water-gilding Upon Silver
Take copper-flakes, on which pour strong vinegar; add alum and salt in equal quantities; set them on a fire, and when the vinegar is boiled, till it becomes one-fourth part of its original quantity, throw into it the metal you design to gild, and it...
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To Tell The Number Of Points On Three Cards Placed Under Three