Dissolve assafoetida in warm water, and put half a tablespoonful in each ear of the sheep.  It is a speedy remedy.

518.  Water-proof for leather

Take of linseed oil, 1 pint; yellow wax and white turpentine, of each, 2 oz.; burgundy pitch, 1 oz.; melt all together, and colour with lampblack.  This being applied to boots, you may stand in water all day, and your feet will be dry at night.

519.  To brown gun-barrels

Rub the barrel, after it is finished, with aquafortis, or spirit of salt diluted in water; leave it by for a week, till a complete coat is formed; then apply a little oil, and after rubbing the surface dry, polish it with a hard brush and a little beeswax.

520.  Liquid glue

Put 1 oz. of borax into a pan with 1 quart of water, set it on the fire; when melted, which will be very soon, put in 8 oz. of gum shellac, and boil until dissolved; if too thin add more gum; when cool bottle for use.

521.  To take ink spots out of mahogany

Apply spirits of salt with a rag, until the spot disappears, and immediately wash with clean water; or to half a pint of soft water put 1 oz. of oxalic acid, and 1/2 oz. of butter of antimony; shake it well, and when dissolved it will be very useful for extracting stains out of mahogany, as well as ink, if not of too long standing.

522.  To clean marble, sienna, Jasper, porphyry, &c.

Mix up a quantity of strongest soap-lees with quicklime, to the consistence of milk, and lay it on the stone, &c., for 24 hours; clean it afterwards with soap and water, and it will appear as new.  This may be improved by rubbing or polishing it afterwards with fine putty powder and olive oil.  This is a beautiful article for cleaning marble monuments, &c.

523.  To clean silver furniture

Lay the furniture piece by piece upon a charcoal fire; and when they are just red, take them off and boil them in tartar and water, and your silver will have the same beauty as when first made.  Try this method once and you will never forsake it; it will not remove a portion of the silver, as article that are sold in vials, boxes, &c., for this purpose will do.

524.  A fine black varnish

Take 2 ozs. of bitumen of Palestine, 2 ozs. of resin, and 12 ozs. of umber; melt them separately, and afterwards mix them together over a moderate fire; then pour upon them, while on the fire, 6 ozs. of clear boiled linseed oil, and keep stirring the whole from time to time; take it off the fire, and, when pretty cool, pour in 12 ozs. of essence of turpentine.  This varnish is for coaches and iron work.

525.  To paint sail-cloth, so as to make it pliant, durable, and water-proof