Stearic Acid

Fat is saponified, and the soap decomposed by an acid, with a large quantity of water, the mixture being kept warm and well stirred. The water being drawn off, the fatty matter is well washed, allowed to cool, and submitted to strong pressure.

Storm Glass

Take 2 1/2 drs. of camphor, 38 grs. of nitre, and 38 grs. of sal ammoniac; dissolve them in 9 drs. of water, and 6 drs. of rectified spirit, with a gentle heat. This is placed in a glass tube covered with a brass cap, with a small hole to admit air. Or it may be put in an eau de Cologne or other long bottle, tied over with bladder. Its various changes are supposed to indicate changes of weather, but the indications are not to be relied on. Stuffing Birds and Animals, Preparations for. 1. Camphor 1 oz., corrosive sublimate 1 oz., alum 1/2 oz., sulphur 1 oz.; all finely powdered and mixed.

2. Tanner's bark dried and powdered 2 oz., burnt alum 1 oz., snuff 1 oz.; mix, and add arsenic 1/4 oz., camphor 1/4 oz., sulphur 1 dr.

3. Becoeur's Arsenical Soap. Camphor 5 drs., arsenic 4 oz., white soap 4 oz., carbonate of potash 12 oz., air-slaked lime 4 oz.; make a stiff paste with a little water.

Styrol

Mix 20 parts of storax with 7 of carbonate of soda, and put them into a retort with water, and apply heat. A limpid fluid distils, which becomes when heated to a certain point a transparent solid.

Sugar Resin

Mix 16 parts of strong sulphuric acid with 8 of the strongest nitric acid; when cooled to 70° Fahr., stir in 1 part of finely powdered sugar. In a few seconds, when the sugar has become pasty, take it out of the acid and plunge it into cold water. Add more sugar to the acid, and proceed as before. Wash the resinous matter carefully, and dissolve it in alcohol or ether. Evaporate the solution with a gentle heat. It is very combustible. Its solution may be used to render gunpowder, lucifer matches, etc, waterproof.

Sulphide

A sulphide was formerly termed a sulphuret, which latter name has been almost invariably retained in the present edition.

Sulphite of Copper

To a concentrated solution of bisulphite of potash add a cold solution of sulphate of copper, filter, and heat gently.

Sulphocyanide of Ammonium

Saturate 2 parts of common water of ammonia (sp. gr. 0.950) with sulphuretted hydrogen; and add 6 parts of the same ammonia. To this mixture add 2 parts of sulphur, and the product of the distillation of 6 parts of prussiute of potash, 3 of sulphuric acid, and 18 of water. Digest till the sulphur is no longer acted on, and the liquid becomes yellow. Boil the liquid till it becomes colourless, filter, evaporate, and crystallize.

Sulpuuret of Carbon

See Bisulphuret of Carbon.

Steep of Milk

Evaporate, with constant stirring, 6 lbs. of skimmed milk to 3 lbs.; add 4 1/2 lbs. of sugar; dissolve with a gentle heat, and strain. It may be flavoured with the addition of 1 oz. of cherry-laurel water. [For other Syrups see Pocket Formulary.] Milk may be preserved by first heating it, and when cold, charging it with carbonic acid gas.