32 MATERIA MEDIC A. 



citement, heat of skin, and fulness of pulse, with a tendency to dia- 

 phoresis. Large doses prove narcotic. Sometimes it seems to act 

 as sedative. It is applicable in typhoid cases, accompanied with 

 nervous derangement. It is sometimes usefully combined with 

 opium, in rheumatism, &c. 



Dose, in substance, from 5 to 10 grains. The emulsion is made 

 by rubbing up the camphor with gum, sugar, myrrh, and water. 



Aqua CamphorcB — Camphor Water — is made by adding a few 

 drops of alcohol to camphor, and then rubbing up with carbonate of 

 magnesia and water : it contains 3 grains to every fluidounce. 



Ttnctura Ca^nphorce, often called Spirits of Camphoi'^ contains 

 two ounces of camphor to the pint of alcohol ; — chiefly employed as 

 an embrocation to sprains and bruises ; used internally in colic and 

 cholera ; — dose, 5 drops to f3j. 



Linimentum Camphorce — Camphor Liniment, consists of cam- 

 phor dissolved in olive-oil ; used as a mild embrocation. 



Tinctura Saponis Camphorata, improperly called Soap Lini- 

 'ment, — made by mixing together camphor, Castile soap, oil of rose- 

 mary, and alcohol. It is a yellowish oleaginous liquid, much used 

 as a stimulant anodyne lotion in sprains, rheumatism, &c. 



Linimentum Saponis Camphoratum, commonly known as Opo- 

 deldoc^ — made like the last-mentioned preparation, except that an ani- 

 mal soap is used instead of a vegetable one, in consequence of which 

 it coagulates on cooling, and yields a soft solid, which liquefies at 

 the temperature of the body; — uses, the same as the others. 



Hops. — (Humulus, U. S.) 



The Humulus lupulus (Fig. 4), is a native of Europe and North 

 America. It has a perennial root, which sends up annually several 

 rough, flexible, twining stems. The male and female flowers grow 

 on different plants. The part used is the flowers, or rather strobiles, 

 which are collected when ripe, dried, and packed in bales. They 

 have a greenish-yellow colour ; a bitter, astringent, and somewhat 

 aromatic taste ; impart their virtues to water and alcohol. A reddish 

 powder is found at the base of the scales, termed lupulin, which 

 contains all the virtues of the hops. These virtues depend upon a 

 peculiar principle called lupulina, which resides both in the hops 

 and in the powder. 



Effects on System. — Stomachic, tonic, and slightly narcotic. The 

 odorous emanations from hops are hypnotic; for this purpose the 

 hop-pillow is employed, made by previously moistening the hops 

 with spirits, to increase the effect, as well as to prevent a rustling 

 noise. Hops are extensively employed in making malt liquors. 

 They are best given in the form of infusion, made in the proportion 

 of 3ss. to Oj water. The decoction and extract are objectionable. 

 Lupulin may be given in the dose, 6 to 12 grains, made into a pill. 



