356 VEGETABLE DRUGS 



MoEPHiNJE 'Sulphas. Morphine Sulphate. 

 (C„H,,N O3), H,S O, + 5 H,0. (U. S. & B. P.) 



Derivation. — Morphine is stirred into boiling distilled 

 water ; diluted sulphuric acid is added until neutralization 

 is* attained, and the sulphate crystallizes out on cooling. 



Properties. — White, feathery, acicular crystals of a silky 

 lustre; odorless and having a bitter taste. Permanent in 

 the air. Soluble in 21 parts of water, and in 702 parts of 

 alcohol. 



Dose. — Same as hydrochloride. 125 parts of morphine 

 sulphate correspond to 100 parts of the pure alkaloid. 



The official salts of morphine may be used interchange- 

 ably. The acetate is more soluble, but less stable, than the 

 sulphate, which is sufficiently soluble for practical purposes, 

 and is in more common use. 



Liquor MoRPHnsr^ Hydeochloeidi. (B. P.) 



One per cent. 



Dose.—B.., 3 vL- § ii. (24.-60.); D., T^x.- 3 i. (.6-4). 



Liquor Morphine Acetatis. (B. P.) 

 Same strength and dose as above. 



Injeotio Morphinje Hypodermica. (B. P.) 

 One per cent. 

 Dose. — Same as liquor morphini hydrochloridi. 



SupposiTOEiA Morphine. (B. P.) 

 (Gr.^ morphine.) 



Dose. — Dog, 1 per rectum. 



CoDEiNA. Codeine, C,,H,,N03 4- H,0. (U. S. & B. P.) 



Derivation. — An alkaloid obtained from opium by evapo- 

 ration of the ammoniacal liquid, after the precipitation of 



Digitized by Microsoft® 



