CINCHONA.
9!) 7
^ 0,n parative Table of some distinguishing properties of Cinchonia and Quinia.
■onn..
'jute ,
'^ititg \
"'KXtiox.
'•"Hi
Spro P or ti° n > oratomic ?Iin water ............
J
’‘%J m alcohol
ether .
^^Ipkatc }^ orin and aspect2 solubility.
*V<
An
'Opiate
Th,
\*^‘ate
*7 Chlorin 0 ° f +? tStt//,Aa(e treatedWeltis.. ne * tllen by ammonia,
Cinchonia.
Crystalline.
Bitter.
Infusible when quite dry; whenmoist fuses, but at the sametime decomposes.
One atom contains only one atomof oxygen.
154
Dissolves in 2500 times its weightof boiling water.
Soluble; solution readily crystal-lizes.
Sparingly soluble; solution rea-dily crystallizes.
Four-sided prisms.
Soluble in 54 parts of cold wateror 6 parts or spirit (sp. gr. 0*85).
Soluble in half its weight of coldwater or one part of cold spirit(sp. gr. 0'85).
Crystallizes in needles.
Scarcely crystallizable; aspectgummy.
Scarcely crystallizable.
Very soluble; crystals small andgranular.
Quinia.
A reddish solution.
Amorphous (in the anhydrousstate). The hydrate is crystal-lizable, but with difficulty.Very bitter.
Fusible.
One atom contains two atoms ofoxygen.
162
Dissolves in 200 times its weightof boiling water.
More soluble than cinchonia;solution with difficulty crystal-lizes.
Very soluble; solution crystal-lizes with difficulty.
Pearly silky needles.
Soluble in 740 parts of cold wateror 80 parts of spirit (sp. gr.0-85).
Soluble in 11 parts of cold water.More soluble in spirit than sul-phate of cinchonia.
Crystallizes in silky or pearlytufts.
Crystallizes in pearly needles.
Crystallizes in prismatic needles.
Less soluble ; crystals in silkytufts, grouped in stars, &c.
An emerald-green solution.
7. ^ .
^el] et - ncin a: Cusco cinchonia ; Cusconin. —Discovered in Arica or Cusco-Cinchnna by1uinj a - r a,1 d Coriol in 1829. It was procured from this bark by the same process thatll > cin c |? extra cted from yellow hark. It is a white crystallizable substance, analogousSb; r ia v» many of its properties, but is distinguished by its acquiring a green* 0r, Hin ” e act >on of nitric acid, and by a boiling saturated solution of the sulphatesi % 0 r it cools, a tremulous jelly, which by desiccation becomes horny. It con-
tWbon .
Uydrogen_ ttrogen ..
0
x ygen
Aricina.
the,.* . f v eraScie„ V|(le uce
Eq.
Eq. Wt.
Per Cent.
20 .
120 .
70-59
12 .
12 .
700
1 .
14 .
8 23
3 .
24 .
1412
1 .
170 .
10000
i said to exist
barks; but
IS required to establish their existence. Dr. Mills (Quart. Journ. of>din rf.:i 1828, p. 379) has given the name of Blanquinine to a supposed newJ®. Cinchona blauca ( C. ovalfolia). The Chino'idine of Sertuerner (Journ. deIrv'Ditiia'-’-^ - s ’ acc °i'ding to Henry fils ai
Ljw.i
and Delondre (Ibid. 144), merely a mixture
inch 0na an, i cinchonia with yellow colouring matter- The alkalescent matter^i n chonn?° Va ( see P- PID) requires further examination. The alkaloids of the falsear ks have been already (p. 992) referred to.
U‘rj s t^ Mlc;A i. Characteristics. —The most important chemical charac-fol Wi S ^ K; cinchona barks are those derived from the action of theon infusions of bark: tincture of nutgalls, emeticfirst la. tine, sulphate of iron, and neutral oxalate of ammonia. Thethe ] as , ^ test for the alkaloids, the three following for tannic acid, andtests 1). 01 time. Tables of the changes produced by these and otherd 'ebeen published by Vauquelin (Ann. de Chim. lix. 113), Von