Strammonii Folia. The dried leaves of Datura Strammomium. Dark greyish-green, wrinkled leaves, 4-6 inches long, with a characteristic odour, and an unpleasant bitter taste.

1Tinctura Strammonii. Dose, 5 - 15 min.; 0.3 - 1 c.c. - 20; Alcohol 45% to 100.

Strammonii Semina. The dried ripe seeds of Datura Strammonium Dark brown or nearly black, flattened, reniform seeds about 1/6 of an inch long; surface is pitted; no marked odour, but a slightly bitter taste.

1Extractum Strammonii. Dose, 1/4 - 1 gr.: 15 - 60 mgms. An evaporated alcoholic percolate.

Strophanthi Semina. Strophanthus Seeds. The dried ripe seeds of Strophanthus Kombe. Oval acuminate, flattened seeds about 3/5 inch long, covered with silky hairs, greenish-fawn in colour: odour characteristic, taste very bitter. The active principle is the glucoside strophan-thin.

2Extractum Strophanthi. Dose, 1/4 - 1 gr.; 15 - 60 mgms. An alcoholic percolate evaporated and to which milk-sugar has been added.

1Tinctura Strophanthi. Dose, 5 - 15 min.; 0.3 - 1 c.c. - 2.5; Alcohol 70% 100: by percolation.

Strychnina (see Nux Vomica p. 75).

Styrax Prceparatus. Prepared Storax. A balsam obtained from the trunk of Liquidambar orientalis purified. A semi-transparent, brownish-yellow, semi-liquid balsam, with a strong agreeable odour and balsamic taste.

Sued. (With dose, 5 - 15 min. Belladonnæ; dose, 30 - 60 min. Hyoscyami; 1 - 2 fl. dr. Conii, Scoparii, Taraxaci; (1 - 2 fl. oz.), Limonis.)

Sulphonal. Sulphonal. Dose, 10 - 30 grs.; 1/2 - 2 gms. Dimethyl-methane-diethylsulphone, (CH3)2C(S02C2H5)2. Colourless, inodorous, nearly tasteless crystals. Soluble, 1 in 450 of cold, 1 in 15 of boiling water, 1 in 50 of alcohol.