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 wish to clean upon the table, and sprinkle it with boiling water; tak... To Represent A Storm At Sea
Provide two strips of glass, whose frames are thin enough to admit both strips freely into the groove of the lantern. On one of these glasses paint the appearance of the sea from a smooth calm to a violent storm. Let these representations run gradua... To Represent Cascades Of Fire
In cutting out cascades, you must take care to preserve a natural inequality in the parts cut out; for if, to save time, you should make all the holes with the same pointed tool, the uniformity of the parts will not fail to produce a disagreeable ef... To Separate The Two Colours Of A Pack Of Cards By One Cut
To perform this amusement, all the cards of one colour must be cut something narrower at one end than the other. You show the cards, and give them to any one, that he may shuffle them; then holding them between your hands, one hand being at each ext... To Set Fire To A Combustible Body By Reflection
Place two concave mirrors at about twelve feet distance from each other, and let the axis of each be in the same line. In the focus of one of them place a live coal, and in the focus of the other some gunpowder. With a pair of strong bellows keep bl... To Show That The White Of Eggs Contains An Alkali
Add to a wine-glass half full of tincture of red cabbage a small quantity of the white of an egg, either in a liquid state or rendered concrete by boiling. The tincture will lose its blue colour and become changed to green, because the white of the ... To Show The Pressure Of The Atmosphere
Invert a tall glass or jar in a dish of water, and place a lighted taper under it: as the taper consumes the air in the jar its pressure becomes less on the water immediately under the jar; while the pressure of the atmosphere on the water without t... To Show The Spots In The Sun's Disk By Its Image In The Camera
Obscura. Put the object-glass of a ten or twelve feet telescope into the scioptric ball, and turn it about till it be directly opposite the sun. Then place the pasteboard mentioned in page 16, in the focus of the lens, and you will see a clear brig... To So Fill A Glass With Water That It Cannot Be Removed Without
spilling the whole. This is a mere trick, but may afford some amusement. You offer to bet any person that you will so fill a glass with water that he shall not move it off the table without spilling the whole contents. You then fill the glass, and,... To Soften Horn
To one pound of wood-ashes, add two pounds of quick lime; put them into a quart of water. Let the whole boil till reduced to one-third. Then dip a feather in, and if, on drawing it out, the plume should come off, it is a proof that it is boiled enou... 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. Take a little clay, cover your iron with it, temper it in a c... 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 inches from the prime conductor. A number of extremely fine filaments w... To Take A Plaster-of-paris Cast From A Person's Face
The person must lie on his back, and his hair be tied behind. Into each nostril put a conical piece of paper, open at each end to allow of breathing. The face is to be lightly oiled over, and the plaster being properly prepared is to be poured over ... To Take Impressions Of Coins Medals &c
Cut fish-glue, or isinglass, into small pieces, immerse it in clear water, and set it on a slow fire; when gradually dissolved, let it boil slowly, stirring it with a wooden spoon, and taking off the scum. The liquor being sufficiently adhesive, tak... 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. From the total of all this, let him deduct 320, and tell you the rema...

Never-yielding Cement Aigrettes Composition I Saltpetre Two Ounces Flour Of Sulphur One Ounce The Three Magical Parties Chemical Illuminations The Deforming Mirrors A Water Which Gives Silver A Gold Colour Bottles Broken By Air

To Make Squibs And Serpents The Leech A Prognosticator Of The Weather To Load Air Balloons With Stars Serpents &c &c When You Fill To Give Silver-plate A Lustre To Find The Number Of Changes That May Be Rung On Twelve Bells To Show The Spots In The Sun's Disk By Its Image In The Camera To Represent Cascades Of Fire To Tell The Number Of Points On Three Cards Placed Under Three