Linum. Linseed. The dried ripe seeds of Linum usitatissumum. Small brown glassy, nearly flat seeds, about 1/6-1/4 inch long; odourless; taste oily and mucilaginous.

1Linum Contusum. Crushed Linseed. The above powdered. It should not be rancid.

2O1eum Lini. Made by expressing the seeds. Viscid yellow, with a faint odour and a bland taste. Soluble 1 in 10 of alcohol, and in oil of turpentine.

Liquores. (With a dose of 1/2 - 1 min. Atropinę Sulphatis,; 1/2 - 2 min. Trinitrini; 2 - 8 min. Arsenicalis, Arsenici Hydrochloricus, Sodii Arsena-tis, Strychninę Hydrochloridi; 5 - 15 min. Ferri Arsenatis, Ferri Perchloridi, Ferri Persulphatis, Thyroidei; 5 - 20 min. Arsenii et Hydrargyri Iodidi; 10 - 20 min. Sodę Chlorinatę; 10 - 30 min. Potassę; 10 - 60 min. Morphinę Acetatis, Morphinę Hydrochloridi, Morphinę Tartratis; 20 - 60 min. Calcis Saccharatus, Ethyl Nitritis; 30 - 60 min. Bismuthi et Ammonii Cit-ratis, Hydrargyri Perchloridi; 1/2 - 2 fl. dr. Hydrogeni Peroxidi; 2 - 4 fl. dr. Potassii Permanganatis; 2 - 6 fl. dr. Ammonii Acetatis, Ammonii Citratis; 1 - 2 fl. oz. Magnesii Carbonatis 1 - 4 fl. oz. Liquor Calcis; without stated dose, either stock solutions or for external use, Acidi Chromici, Ammonię, Ammonię Fortis, Calcis Chlorinatę, Caoutchouc, Epispasticus, Ferri Perchloridi Fortis, Ferri Persulphatis, Hamamelidis, Iodi Fortis, Picis Carbonis, Plumbi Subacetatis Dilutus, Plumbi Subacetatis Fortis, Sodii Ethylatis, Zinci Chloridi.)

Liquores Concentrati. (With dose of 30 - 60 min. Calumbę, Chiratę, Cusparię, Kramerię, Quassię, Rhei, Senegę, Sennę; with dose, 1/2 - 2 fl. dr. Serpentarię; dose, 2 - 8 fl. dr. Sarsę Comp.)

Liquor Ethyl Nitris. Solution of Ethyl Nitrite. Dose, 20 - 60 min.; 1.2 - 4 c.c.

A mixture of 95 parts by weight of absolute alcohol and 5 parts of glycerin, containing between 2 1/2 and 3% of ethyl nitrite. A highly inflammable, limpid, colourless liquid with a characteristic apple-like odour.

Liquor Hydrogenii Peroxidi. Solution of Hydrogen Peroxide. Dose, 1/2 - 2 fl. dr. 2 - 8 c.c.

An aqueous solution of hydrogen peroxide. A colourless, odourless liquid with a slightly acid taste; renders saliva frothy.

Liquor Pancreatis. Pancreatic Solution. An alcoholic preparation containing the digestive principles of the pig's pancreas.

Liquor Sodii Ethylatis. Solution of Sodium Ethylate. A colourless liquid of syrupy consistence, becoming brown on keeping. Made by dissolving sodium in absolute alcohol.

Liquor Trinitrini. Solution of Trinitrin. (Nitroglycerine Glonoin.) Dose, 1/2 - 2 min.; 0.03 - 0.12 c.c.

Trinitroglycerine of commerce, 1; Alcohol, 100. A clear and colourless liquid.

Lithium. Lithium. Incompatible with lithium salts in solution are carbonates and phosphates.

1Lithii Carbonas. Dose, 2 - 5 grs.; 1/2 - 3 dgms. A white powder or minute crystalline grains; in solution has an alkaline reaction. Soluble 1 in 70 of water, insoluble in alcohol.

1Lithii Citras. Dose, 5 - 10 grs.; 3 - 6 dgms. A white crystalline deliquescent salt. Soluble 1 in 2 of water.

1Lithii Citras Effervescens. Dose, 60 - 120 grs.; 4 - 8 gms. - 5; Sodium Bicarbonate, 58; Tartaric Acid, 31; Citric Acid, 21. A granular powder.

Lobelia. Lobelia. The dried flowering herb of Lobelia inflata. Stems are angular, channelled, and furnished with narrow wings, purplish in colour, hairy. The leaves are irregularly toothed and hairy. Odour somewhat irritant. Taste at first not marked but subsequently burning and acrid.

Tinctura Lobelise Ętherea. Dose, 5 - 15 min.; 0.3 - 1 c.c. - 20; Spirit of Ether, 100: by percolation.

Lotiones (see Hydrargyrum p. 66).