332 VEGETABLE DRUGS 



In addition to these, the following exist in minute quan- 

 tity, but some are merely "pharmaceutical curiosities": — 



Protopine. Oi-ganic Acids. 



Cryptopine, Meconic Acid. 



Oxynarcotine. ^^*\^ ^^^^l- 



Hydronarcotine*^ Pectin. 



Laudanosine. ^"^- ^^' percent. 



Laudaine. ^«^^- 



Phoeadine. ^^^^f^' 



Codamine. T'^f 1 ^H'' , 



Meconodine. A Volatile Oil. 



Gnoscopine. ^^^^^"^ ^^^^^«- 



Lanthopine. Caoutchouc 



Water. 15.-25. percent. Ammonium Salts. 



Neutral Bodies. Calcium Salts. 



Meconin. Magnesium Salts. 



Meconoisin. 



Impurities, — Starch, molasses, leaves, fruit, stones and 

 water. 



Incompatibility. — Solutions of lead acetate and sub- 

 acetate, and of copper and arsenic salts, precipitate mecon- 

 ates, sulphates and coloring matters, but the opium remains 

 physiologically active. Ferric chloride produces a deep red 

 color with opium, by its union with meconic acid. Tannin 

 compounds precipitate codeine tannate. Alkalies, their car- 

 bonates and ammonia precipitate morphine and narcotine. 



Dose.—B.., 3 i-ii. (4.-8.) ; C, 3 ii.-iv. (8.-15.) ; Sh., gr.x.- 

 XXX. (.6-2.); Sw., gr.v.-xx. (.3-1.3); D., gr.ss.-iii. (.03-.2). 



Opii Pulvis. Powdered Opium. (U. S. P.) 



Opium dried at a temperature not exceding 85° C. 

 (185° P.), and reduced to a fine powder. Powdered opium, 

 for pharmaceutical or medicinal purposes, when assayed 

 should yield not less than thirteen (13) nor more than fifteen 

 (15) per cent, of crystallized morphine. Any powdered 

 opium of a higher percentage may be brought within these 

 limits by admixture with powdered opium of a lower per- 

 centage in proper proportions. Powdered opium is the base 

 of all the other pharmacopoeial preparations of opinra. 



