ii4 



DICTIONARY Ol" THE ACTIVE riU.NCiri.LS dl I'LAXTS. 



§ 147. MARRUBIUM vulgare (Horehouud) ; Lahialir. The whole 

 plant. Investigators : Kromayer and Harms, Archie. Phanu., vols. 83, 

 108, IIG. Harms obtained 2 grammes of Marrubiin from 25 lb. of the 

 ])lant. 



MARUBIIN B. ; crys. netJIus (from oold alcohol) ; M.P. 148° (Harms), or 

 Ifiiv ( Kriiinayer) ; neutral reaction, bitter. 



Soluble ill alcohol, ether, chloroform, slightly in water, not in petroleum 

 spirit. 



Removed by ether from aqueous solution. 



Absorbed by charcoal. 



Not precipitated by lead acetate, neutral or basic (to alcoholic solution), 

 nor by alkaloid reagents. 



Fehling's solution, not reduced. 



No colour reactions with acids (concentrated sulphuric acid, brownish- 

 yellow — Kromayer). 



§ 148. MEGARRHIZA Californica (Echinocystis) ; 

 Investigator : lleaney, Aiiirr. J. Ph., 48, 4:")!. 



(«) MEGARRHIZIN G. ; poisonous. Acids give sugar 

 r/ii:iniipliii. 



Soluble in alcohol, not in ether. 



(b) MEGARRHIN, resembles Saponin ; enlarges pujiil. 



(c) MEGARRHtZITIN B. ; crystalline, poisonous. 



§ 14',). MENYANTHES trifoliata (Buckbean) ; Ge 

 vestigators : Kromayer, Ai-chiv Ph., 18G1 ; Lendrich, idei 

 MENYANTHIN G., C3„H^„Oj4 (Kromayer) or Cj^H^.O, 

 amorphous, terebinthinate becoming gradually solid ; M.P. 100"-11. 

 neutral reaction, bitter. Acids convert to Menyanthol, CgHgO (Hiise- 

 mann), or C7H,iO» (Lendrich), with characteristic odour, and a laevo- 

 rotatory sugar. 



Soluble in hot water (with difficulty cold), in alcohol, chloroform, 

 benzene ; not in ether. 



Removed from acid solutions by benzene and chloroform ; absorbed by 

 charcoal. 

 Precipitants : 



[Not lead acetate, neutral or basic, or mere cloud.] 

 Tannic acid, white. 



[Not gold chloride, but reduction on warming.] 

 Ammoniacal silver nitrate, reduced. 



CwKrhiltireri'. 



and Megar 



iitiiinaceit'. In- 

 ■I, 230, 38. 



(Lendrich) ; 



Fehling's solution, reduced. 

 Phosphomolybdic acid, yellow. 

 Bismuth potassic iodide, yellow. 

 Mercuric-potassic iodide, white. 

 Iodine solution, yellow. 

 Colour tests, etc. : 



C'oncititiatid sulphuric acid, yellowish-brown changing to violet. 

 Dihitf suliibiiiic acid on warming, odour of Menyanthol. 



§ 150. MIKANIA Gnacn ; Com/iusihr. The leaves. Investigators: 

 Faure, ,/oun,. Phann., [2] 22, 2;)1 ; Fettenkofer, «ey;o-/. Ph., 86, 311. 

 Used in America against snake-poisoning, etc. 



GUACIN B. ; light brown amorphous powder ; M.P. 100' ; neutral, 

 bitter. 



Soluble in hot water (difficultly cold), in alcohol, and in ether. 



Colour tests : 



Concentrated sulphuric acid, dissolves reddish-brown. 

 „ nitric acid, dissolves dark yellow. 



„ hydrochloric acid, little change. 



§ \U\. MORINDA citrifolia (Ruhiaceu) contains Mi ihixdix, a glucoside 

 yielding sugar, and IMor.i.MioN, a colouring matter. Morindin resembles 

 Ruberythric acid (from Rubia tinctoria or Madder), the glucoside of 

 Alizarin (Dihydroxi-anthraquinone). 



§ 152. MORRENIA brachy Stephana (tasis) ; Palmaceie : Argentine 

 Republic. The root. 



MORRENINE A. ; dark, brown amorphous ; M.P. 106° ; bitter taste 

 sharp odour. 



Soluble in water, alcohol, amyl alcohol, chloroform. 



' Precipitated by most alkaloid reagents.' 



§ I'l.!. NANDINA domestica ; Berheridarpo:. The root bark. 



NANDININE A., C,,,H|aN04 ; amorphous powder ; poisonous. Salts amor- 

 phous. 



Soluble in alcohol, ether, chloroform, benzene ; not in water. 



Alkaline hydrates, dissolve (acids re-precipitate). 



Platinum chloride, wbitish-yellow pp. 



Concentrated sulphuric acid containing nitric acid, blue solution. 



§ l.">4. NARTHECIUM ossifragum ; Juncwea: Investigator : Walz. 

 N. Jahrh. J'h., 14, ?Ab. 



NARTHECIN B. ; crystalline ; M.P. 35° ; acid reaction, biting taste. 



Soluble in alcohol, scarcely in water. 



