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Updated: June 18, 2025
Drill a hole for the reception of the soft metal, say 1/2 to 3/4 inch diameter, wash the parts not to be tinned with a clay wash to prevent the adhesion of the tin, wet the part to be tinned with alcohol, and sprinkle fine sal-ammoniac upon it; heat the article until fumes arise from the ammonia, and immerse it in a kettle of Banca tin, care being taken to prevent oxidation.
If a lead comb be sometimes passed through the hair, it will assume a darker colour, but for health it cannot be recommended. HAIR POWDER. To know whether this article be adulterated with lime, as is too frequently the case, put a little of the powder of sal-ammoniac into it, and stir it up with warm water.
WEAK EYES. Dimness of sight, arising from weakness or inflammation, is best relieved by frequent washing of the eyes with cold water. If this do not succeed, the following solution may be applied. Dissolve four grains each of the sugar of lead and crude sal-ammoniac, in eight ounces of water, to which a few drops of laudanum may occasionally be added, and bathe the eyes with it night and morning.
Take of borax, 10 parts; sal-ammoniac, 1 part; grind or pound them roughly together, then fuse them in a metal pot over a close fire, taking care to continue the heat until all spume has disappeared from the surface, when the liquid appears clear, the composition is ready to be poured out to cool and concrete; afterward being ground to a fine powder.
For yellow gold, dissolve in water 6 ozs. of saltpetre, 2 ozs. of copperas, 1 oz. of white vitriol, and 1 oz. of alum. If wanted redder, add a small portion of blue vitriol. Dissolve in water a mixture consisting of 1-1/2 oz. of saltpetre; vitriol and sal-ammoniac, 1-1/4 oz. of each, and 1 oz. verdigris.
I have here a cylindrical glass jar in which I place some sal-ammoniac and quicklime. I will wet it and heat it a little. That produces the pungent gas of ammonia. "On one side of this third piece of paper I myself write with this mercurous nitrate solution. You see, I leave no mark on the paper as I write. I fold it up and drop it into the jar and in a few seconds withdraw it.
The Leclanche-Barbier dry cell is a modification of the Leclanche wet cell, having a paste of sal-ammoniac instead of a solution. All the foregoing cells are called "primary," because they are generators of electricity. There are, however, batteries known as "secondary," which store the current as the Leyden jar stores up the discharge from an electrical machine.
Take 2 fl. ounces of muriatic acid, add zinc till bubbles cease to rise, add 1/2 a teaspoonful of sal-ammoniac and 2 ounces of water. Damp the part you wish to solder with this fluid, lay on a small piece of lead, and with a piece of hot iron or soldering iron solder the part. Take of pewter 4 parts, tin 1 part, bismuth 1 part; melt them together. Resin is used with this solder.
Dry cells are more cleanly and portable than wet, they require little or no attention, and are well suited for household or medical purposes. The zinc plate forms the vessel containing the carbon plate and chemical reagents. The black paste is surrounded by a white paste Z, consisting mainly of lime and sal-ammoniac.
A. Rust joints are not now much used in engines of any kind, yet it is necessary that the engineer should be acquainted with the manner of their formation. One ounce of sal-ammoniac in powder is mingled with 18 ounces or a pound of borings of cast iron, and a sufficiency of water is added to wet the mixture thoroughly, which should be done some hours before it is wanted for use.
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