Milk, carefully skimmed, free from cream, is curdled with the addition of a little vinegar, or by simply standing in a warm place.

Pour the curdled milk through filter paper, which will allow the curds or caseine to remain. Wash with pure water. To remove all traces of fat, the caseine may be tied in a cloth and boiled in water a short time, the latter treatment is not absolutely necessary. Allow the caseine to dry on blotting paper in a warm place. If well dried, it will keep a long time.

Ordinary Caseine Cement

Caseine,..................12 parts.

Slacked lime,.............50 parts.

Fine sand, ...............50 parts.

Water, sufficient to make a paste.

For filling holes and interstice in stone.

Cement To Unite Glass And Metal

Make a thin paste of alum and plaster of paris with water. Useful also for filling crevices, etc.

Cement For Marble And Other Minerals

Portland cement,.............2 parts.

Slacked lime powder,........1 part.

Litharge, .......................1 part.

Mix with enough silicate of soda to make a thin paste.

Crack And Crevice Filler

Make a paste of 1 pound of flour and 3 quarts of water and 1 oz. of alum. Soak in this thin paste, enough newspapers or other unsized paper to form a thick putty. This is excellent for filling cracks in floors. It becomes hard and tenacious and will shrink very little.

Joiners' Putty - For Stone, Brick And Wood Work

Mix 8 ozs. of dry clay or whiting and 1 oz. of powdered litharge with enough linseed oil to make a soft putty. Very durable.

Cement For Paper

Dissolve 4ozs. of good glue or gelatine in 1 pint of water. Add 8 ozs. of brown sugar and 4 ozs. of gum arabic or dextrine. Heat the mixture to make a perfect solution.

Wall Paper Paste

Make a thick paste with wheat or rye flour in cold water. Stir until no lumps remain. Add 1-2 oz. of alum to each pound of flour used. Then add slowly, with constant stirring, boiling water to the amount of one quart to each pound of flour. The addition of 15 to 30 drops of carbolic acid to each pail of paste will prevent its souring. A few drops of formaldehyde solution is even better if the carbolic odor is objectionable.

Eye flour makes a stronger and more tenacious paste.

Wall Paper Paste

Make a flour paste by boiling flour with sufficient water. To each 5 pounds of the paste, add 3 ozs. saturated solution of alum and 5 ozs. solution of dextrine. Both solutions made with hot water.

Paste For Ordinary Purposes

Dissolve dextrine in sufficient water to make a fluid paste. Add a few drops of carbolic acid to preserve it.

Caseine Cement For General Use

Dissolve together, caseine and silicate of soda; use alone, or mixed with an equal quantity of chalk or silex.

How To Render Dammar Varnish Clear

Add to each gallon, 1 pint of pure grain or wood alcohol. This will also aid the drying qualities. Good dammar is simply dammar gum and turpentine, in about equal parts, by weight, dissolved together in the cold or with a little heat. Copal spirit varnishes are made in the same way. The addition of a little venice turpentine, 1 to 2 ozs. to the quart, gives any spirit varnish more elasticity.

Liquid Glue. No. 1

Dissolve good glue in vinegar. Add a little alum and mix alcohol to the amount of 1-4 the bulk of the mixture.

No. 2

Dissolve 3 parts of glue (good quality) in 8 parts hot water. When cool, add 1-2 part hydrochloric acid and 3-4 part zinc sulphate.

No. 3

Dissolve glue in vinegar so that when cool it forms a thick fluid; add 1 part nitric acid to each 20 parts of the dissolved glue.

Water-Proof Glue

Boil for 10 minutes a mixture of Thick solution of glue in water ....... 10 parts.

Linseed oil, (boiled)............5 parts.

Litharge,.......................1 part.

Use hof.

Putty For Floors And To Fill Cracks Or Crevices. No. 1

Caseine,....................1 part.

Water,....................7 parts.

Spirits of ammonia,.........1 part.

Slacked lime, .............1-2 part.

No. 2.

Glue, .....................2 parts.

Water,...................14 parts.

Plaster of Paris,...........4 parts.

Litharge,.........,.......4 parts.