Waterproofing Compounds

For Boots, etc. (Roome's patent.) Suet 8 oz., linseed oil 8 oz., yellow bees'-wax 6 oz., neatsfoot oil 1 1/2 oz., lamp black 1 oz., litharge 1/2 oz. Melt together, and stir till cold.

2. Linseed oil 8 oz., boiled ditto 10 oz., suet 8 oz., yellow wax 8 oz. Melt.

3. Dr. Harvard's. Wax 8 oz., resin 4 oz., mutton suet 4 oz.; boil together, and apply warm to new boots.

4. Col. Hawker's. Drying oil 1 pint, wax 2 oz.,

Burgundy pitch 1 oz., oil of turpentine 2 oz. Melt over a slow fire, and add a few drops of oil of lavender or thyme Brush the hoots repeatedly with the composition before the fire, till they appear fully saturated.

5. For Leather, etc. Cut 3 drachms of India rubber into small pieces, soak them for 24 hours in a solution of common soda; dissolve this and 3 oz. of asphaltum in 12 oz. of camphine, then add 1/2 oz. of boiled linseed oil.

For Cloth

It is alternately dipped in a solution of acetate of lead with a little gum, and solution of alum.

For Hats

Boil 8 lbs. shell-lac, 3 lbs. frankincense, and 1 lb. borax in sufficient water.

For Canvas, etc

Gutta percha 3 parts is dissolved in resin spirit 9 parts, at a heat of 120° to 140° Fahr., stirring occasionally. - Mr. Castley.

Wax

Yellow bees'-wax is bleached by pouring the melted wax in a divided state on a revolving cylinder partly immersed in water, so as to form it into fine ribbons, which are exposed to air and moisture till bleached, and subsequently refined by melting with water containing sulphuric acid. - Dr. Pereira. It has been proposed to bleach wax by adding to each pound of melted wax 2 oz. of powdered nitrate of soda, and afterwards stirring in, by little at a time, 1 oz. of sulphuric acid diluted with 10 parts of water, keeping the mixture warm, and constantly stirred with a glass rod in a capacious earthen vessel, till all the acid is added. It is then allowed to become somewhat cool, and the vessel filled with boiling water, well agitated, and set aside. The cake of wax is removed into boiling water, till this no longer produces a precipitate with chloride of barium. - M. Ingenhol. [We have not found this render wax perfectly white.]

Wax for Modelling

Lead plaster 8 oz., bees'-wax 8 oz., Burgundy pitch 8 oz.; melt together, stir in sufficient chalk to form a paste, and form it into small sticks for use. [For Sealing Wax, see further back.]

Welding Composition

Mix borax with 1/10 of sal ammoniac, fuse the mixture, and pour it on an iron plate. When cold, pulverize it, and mix it with an equal weight of quicklime, sprinkle it on iron heated to redness, and replace it in the fire. It may be welded below the usual heat.

Artificial Yeast

Honey 5 oz., cream of tartar 1 oz., malt 16 oz., water at 122° F. 3 pints; stir together, and when the temperature falls to 65° cover it up, and keep it at that temperature till yeast is formed.

German Yeast

Ordinary beer yeast from which the moisture has been squeezed out by strong pressure. It is preserved in close vessels.