Hyoscyami Folia. Hyoscyamus (Henbane) Leaves. The fresh 

 leaves, flowers, and branches of Hyoscyamus niger, also the same dried. 

 The leaves vary in length but are seldom more than 10 inches long; oblong, 

 with a conspicuous mid-rib, pale green, with hairs especially along the veins 

 and on the under surface. The flower yellowish, with purplish veins. 

 The herb has a strong characteristic odour, and a bitter slightly acrid 

 taste. Active principles the alkaloids hyoscine and hyoscyamine. 



^xtractum Hyoscyami Viride. Dose, 2-8 grs. ; 1-5 dgms. 

 The juice expressed from the fresh herb evaporated to a soft extract. 



^ilula Colocynthidis et Hyoscyami (see Colocynthis, 54). 



3 Succus Hyoscyami. Dose, 30-60 min.; 2-4 c.c. 

 Fresh expressed juice, 75; Alcohol, 25. 



iTinctura Hyoscyami. Dose, 30-60 min.; 2-4 c.c. 

 Dried leaves and tops, 10; Alcohol, 45%, 100: by percolation. 



Hyoscinae Hydrobromidum. (Scopolamine Hydrobromide.) Dose 

 1/200-1/100 gr.; 1/3-2/3 mgms. 



This alkaloid is also obtained from Datura alba and Scopola. Colourless, 

 transparent crystals, odourless,; taste acrid and slightly bitter. Soluble 

 1 in 2 of water, 1 in 13 of alcohol. Incompatibles, as for alkaloids but is 

 not precipitated by bicarbonates or ammonium carbonate; decomposed by 

 alkalies or water if warmed. 



Hyoscyaminae Sulphas. Dose, 1/200-1/100 gr.; 1/3-2/3 mgms. 

 A crystalline powder, odourless, deliquescent, with a bitter, acrid taste. 

 Soluble 1 in % of water, 1 in 4.5 of alcohol, very slightly in ether or chlor- 

 oform. Incompatibles as for hyoscine. 



Infusa. (The following with a dose of >^-l fl. oz. Aurantii, 

 Aurantii Comp., Calumbse, Caryophylli, Cascarillae, Chiratae, Cinchona 

 Acidum, Gentianae Comp., Quassiae, Rhei, Rosse Acidum, Scoparii, Senega, 

 Serpentariae, Uvae Ursi; with a dose of >^-2 fl. oz. Sennae; with a dose of 

 1-2 fl. oz. Buchu, Cuspariae, Ergotae, Krameriae, Lupuli; with a dose of 2-4 

 fl. dr. only, Digitalis.) 



Injectiones Hypodermics. (The following with a dose of 2-5 min. 

 Cocainae, Morphinae; with a dose of 3-10 min. Ergots; with a dose of 5-10 

 min. Apomorphinae.) 



lodoformum. lodoform. Dose, #-3 grs.; l /^-2 dgms. 

 Tri-iodomethane, CHI 3 . Shining lemon-yellow crystals, somewhat un- 

 ctous to the touch, with a persistent characteristic and disagreeable odour 

 and taste. Very sparingly soluble in water or benzol, more soluble in 

 alcohol 1 in 120, ether 1 in 7, chloroform 1 in 14, glycerin 1 in 100, olive 

 oil 1 in 30, and in other fixed oils and lanolin. 



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