Flexible Ivory

The pieces of ivory or bone, already manufactured into the shape required, are to be steeped for some time in dilute hydrochloric acid, until they have lost their earthy parts so far as to become yellowish, flexible, and elastic. When dry they become again inflexible, but their flexibility may at any time be restored by steeping them in water. In this manner flexible tubes, probes, bougies, etc, may be constructed.

How To Stain Ivory

Ivory is stained with the usual dyeing materials; it should be first steeped in the mordant and afterwards in the hot colour. Nitro-chloride of tin is the mordant for red, with decoction of brazil or cochineal; for yellow, with fustic; for violet, with logwood. After being plunged in hot liquor it should be placed in cold water. A black stain is given by nitrate of silver.

Ivory may be gilded by immersing it in a fresh solution of proto-sulphate of iron, and afterwards in solution of chloride of gold, It may be bleached by solution of sulphurous acid.

Ivory and Bone to Bleach

M. Cloez recommends the Ivory or bones to be immersed in turpentine, and exposed for three or four days to sunlight. The object to be bleached, should be kept an eighth or a fourth of an inch above the bottom of the bath by means of zinc supports.

Artificial Ivory

Let a paste be made of isinglass, eggshell in very fine powder, and brandy. Give it the desired colour, and pour it while warm into oiled moulds. Leave the paste in the moulds until it becomes hard. See Ivory, to Stain, above.

Japan

See Varnishes.

Jellies

See Dietetic Articles.

Kid-Glove Cleaner

Add 15 drops of strongest solution of ammonia to spirits of turpentine 1/2 pint. (Having fitted the gloves on wooden hands, apply this mixture with a brush. Follow up this application with some fine pumice powder. Rub with some flannel or sponge dipped in the mixture. Rub off the sand, and repeat the same process twice or thrice. Hang in the air to dry, and, when dry, place in a drawer with some scent.)

Koumiss

An alcoholic drink, made by fermenting the milk of mares, and beating it up with a whisk, It may be regarded as a somewhat coarse form of " rum and milk."

Kyan's Solution, for preventing the dry rot

Dissolve 1 lb. of corrosive sublimate in 5 gallons of water.

Labarraque's Chloro-Sodaic Liquor is nearly identical with the Liquor SodAe ChloratAe of the British Pharmacopoeia. It is made by passing the chlorine gas from 2 oz. black oxide of manganese, and 8 oz. of hydrochloric acid, into a solution of 15 oz. of crystallized carbonate of soda in 3 pints of water; or sufficient to bring it to the density of 12° Baume, or 1.09 specific gravity.

Labels, Indestructible, for acid bottles, etc, Write with dilute sulphuric acid (1 part to 6 of water), dry the label and expose it to a moderate heat.

Lacquers

See Varnishes.

Lake Liquor

Boil 1 oz. each of cochineal and salt of tartar in 8 oz. of water, then add 1 oz. of cream of tartar, and the same of alum.