A solvent liquid used for extracting the soluble parts of a substance.

The bark of Eucalyptus occidentalis of Queensland, containing about from 30 to 50 per cent, tannin; there is a commercial extract of 22 to 240 15., containing from 30 to 36 per cent, tannin.

A treatment by which a silklike lustre is given to cotton clothes or yarns as effected by the action of a 20 to 25 per cent, solution of caustic soda upon them while kept in a stretched condition so as to prevent shrinking of the fibres. The soda is subsequently washed out with water. The cotton fibre which is naturally a flattened hollow riband or tube swells up under this treatment by thickening into a cylinder with practically no hollow space, stronger than the unprepared cotton and more easily dyed.

An organic body of com, icated constitution known under the trade name of “Trional,” and used as an hypnotic.

is a colourless gas of ethereal odour, used in medicine and for refrigera tion, prepared by the action of hydrochloric acid on methyl alcohol ia the presence of sulphuric acid. It boils at 277 degrees C. and is soluble in water and alcohol.

Complicated substances containing phosphorus, which are obtained from brain matter; they are of crystal line character, and soluble in hot alcohol.

Barley or other grain, the starch of which has been converted into malt sugar by the enzyme diastase during germination in the process known as malting. Malt sugar is a hard, crystalline body of little sweetness, very similar to grape sugar, and strongly dextrorotatory. The maltose is in turn converted by another ferment into grape sugar.

A general name given to all acids other than those of organic character.

The essentia] oil of the aromatic herb Origanum majomna, containing terpineol and terpenes. It is soluble in alcohol and ether, and is used in perfumery and medicine. Its sp. gr. is o8g to opi.

are extremely minute living organisms by whose agency the processes of decay, putrefaction, many fermentations, and other chemical changes are brought about. Some of them play an important part in connection with infectious diseases and they are roughly divided into two classesviz,, aerobes, v, hieh require oxygen for their sustenance, and anaerobes, which cannot live in oxygen, and are killed by exposure thereto. The function of anaerobes would appear to be largely in the nature of hydrolysis, and that of aerobes one of oxidation.