iir( ri(i\.\i;v (if the active i'i:iNcnM.i;s or n.ANTS. 



gives a precipitate with nitric acid from a diluli' solution of acetic acid, 

 whereas Cnsconidine is only precipitated by nitric acid from a ronc.entraled 

 acetic solution. 



(10) CONCUSCONINE A., C,,,,H,,iX,Oj + H„0 ; monoclinic i)risms ; 

 M.P. 144°, solidifying on further heating, melting again at 20(5"-K° ; dextro- 

 rotator}- ; neutral reaction ; tasteless (salts are bitter). 



Soluble readily in ether, chloroform, or benzene ; very difficultly in 

 alcohol even boiling ; scarcely in petroleum ether, and not in water. 

 Precipitants : 



Alkaline hydiates, resinous. 

 [Xot amraonin, nor lead acetate, neutral.] 

 Platinum chloride, yellow floccnlent. 

 Crold chloride, dirty yellow, with reduction of gold. 

 Colour tests : 



( "cnceutnited sulphuric acid, bluish-green, olive-green on warming. 

 „ „ „ with potassium bichromate, darkreddish- 



brown, changing to intense green. 

 Nitric acid, dark green (without solution) ; added to the alcoholic 

 solution, niti'ic acid gives a magnificent green coloration. 



(11) CONCUSCONIDINE A., C.aH„,;N.,0, ; yellow amorphous; M.P. V1A° ; 

 slightly dextro-rotatory. 



(VI) CUSCAMINE A., crystalline (from alcohol); M.P. --'IK": non- 

 fluorescent : taste astringent and somewhat bitter. 



Soluble in ether and chloroform (very readily), and in alcohol. 

 Precipitated by alkaline hydrates and ammonia. 

 [No colour with Ferric chloride.] 



(13) CHAIRAMINE A., C.,.,H.,„N„0,+H„0. Crys. needles or prisms; 

 anhydrous at 140°, then mefts at 23.S° ; neutral reaction, dextro-rotatory 

 (about+lOO"). 



Soluble rendily in ether and chloroform, in 540 parts of !)7 per cent, 

 alcohol at 11 ('., with difficulty in water, and insoluble in dilute hydro- 

 chloric acid. 



Precipitants : 

 Alkaline hydrates 

 Ammonia. 



Platinum chloride- yellow needles insoluble in alcohol ; formula 

 (ChHCl)., PtClj. 



insoluble in excess. 



Colour tests : Concentrated sulphuric acid, colourless. 

 Nitiic acid, gradual dark green. 

 Fr(il]di''s solution, colourless. 



(14) CONCHAIRAMINE A,, C.,.,H,8N.,0j, with H.,0, and with C..Hr,0 

 (alcohoP, pli^matic crystals: M.P. lOS'-llO" the hydrate, 120° anhydVone, 

 or S2"-SCi' the alcoliolitc. Reaction almost neutral. 



Soluble in hot alcohol (with difficulty cold), in ether, and readily in 

 chloroform ; scarcely soluble in dilute hydrochloric acid. 

 Precipitants : 



Alkaline hydrates, pp. becomes crystalline, and is insoluble in excess. 



Ammonia, insol. in excess. 



Platinum chloride, dark jellow, flocculent. 



Potassium snlphocyanide. 

 Colour tests : 



(^Concentrated sulphuric acid, brown, changing to intense green. 



Nitric acid added to the hydrochloric solution, dark green. 



Fn'.hde's reairent, brownish. 



(15) CHAIRAMIDINE A., C,H.„N.Oj ; amorphous: M.P. 127°; dextro- 

 rotatory ( = -f 7'3' ) neutral. 



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

 Removed by benzene from alkaline solutions. 

 Absorbed by charcoal. 

 Precipitants : 



Alkaline hydrate 



Ammonia. 



Alk. carbonates. 

 Colour tests : 



Concentrated sulphuric acid, yellow, becoming dark green. 



Nitric acid does not dissolve the solid alkaloid. 



to the Iljdrochloric solution, dark green. 



(16) CONCHAIRAMIDINE A., ( '„oH.,6N.A, crys. prisms.; M.P. 114°-11.V 

 (anhydrous) ; neutral reaction. 



Soluble in alcohol, ether, chloroform, benzene, acetone, and ea.sily in 

 acetic and mineral acids except nitric. Insoluble in water. 

 Removed from alkaline solutions by benzene, etc. 

 Precipitants : 



Alkaline hydrates 1 



, '' . ' > pp. oily, becoming crystaJline. 



Ammonia L'^'^ •' a j 



Baryta ) 



Insoluble 

 in excess. 



Platinum chloride, yellow floccu- 

 lent, pp. = ^rhHCll.,PtCl4+.'. 

 H..0. 



