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[Quinamill. Alkaloid found by Hesse in the bark of Cinchona 

 succivubra. — Very delicate, long, asbestos-like, white prisms, of 

 alkaline reaction, readily soluble in ether, alcohol and petroleum- 

 ether, little soluble in dilute alcohol, insoluble in water, potash- ley 

 and ammonia. The sulphate and chloride are easily soluble. 

 Chloride of platinum forms only in concentrated solutions a yellow 

 precipitate. Chloride of gold becomes reduced to the metal. 

 Concentrated sulphuric acid dissolves the Quinamin colourless, 

 yellow to brown on heating; with concentrated nitric acid it 

 becomes first yellow, then orange, and at last colourless. The 

 Quinamin fuses at 172°, and on cooling, presents a radiated, crystal- 

 line mass; in higher temperatures it becomes brown and amor- 

 ph oiis. It has a bitter taste.] 



<|uilii(lill=:Cis Hii NO. In species of Cinchona. The prepara- 

 tion is similar to that of cinchonidin. — Appears in colourless, hard, 

 klinorhomboidal prisms of glass-lustre and of moderately bitter 

 taste; fuses at 175° without loss of weight and is decomposed by 

 more heat, dissolves at 17° in 2580 pts., at 100° in 1858 pts. water, 

 in 143 pts. ether, and in 12 pts. alcohol of 0-835°. The solution in 

 chlorine-water is not altered by ammonia. Most of its salts dis- 

 solve more readily than those of cpiinin. 



(|lliliill=C2o Hi2 NO 2 + 3 HO. In all true quina-barks of the 

 genus Cinchona, always accompanied by larger or smaller quantities 

 of cinchonin, in some barks also by quinidin, cinchonidin, and by 

 other bases. Di-aw out with water acidulated with hydrochloric 

 acid, saturate the liquid with an excess of hydrate of lime, collect 

 the deposit, wash, dry, treat with ether, evaporate the solution, 

 dissolve the remnant in the least possible quantity of water and 

 sulphuric acid, prepare the pure sulphate by evaporating and 

 decompose the sulphate by soda-ley. — Loose, white, easily 

 friable mass or silky tufts of needles (crystallised from alcohol), 

 loses only a little hygi-oscopic water at 100° to 150°, fuses at 196° 

 without loss of weight, and decomposes in a higher temperature ; 

 has a very bitter taste, dissolves in 364 parts cold water, in 6 parts 

 cold and in 2 parts boiling alcohol of 0-820, in 21 parts ether, in 

 2-6 parts chloroform, in benzol, in 200 jjarts glycerin, in 62 parts 

 fixed oils; in chlorine water colourless, the solution, when over- 

 saturated with ammonia, assuming a grass-green colour and 

 yielding a precipitate of the same colour; in concentrated sulphuric 

 acid colourless, the solution turning yellow-brown on heating. 

 The solutions of its salts become brown in the direct sunlight, 

 and are precipitable by the hydrates and by the carbonates of 

 alkalies. 



((uillOtailllic Aei(l=Ci4 Hg Og. In the barks of the genus 

 Cinchona. Boil \vith water, mix the decoction with a little burnt 

 magnesia, precipitating thereby quina-red; throw down the filtrate 



