THE CINCHONA TRIBE.

981

transverse cracks; and some subvarieties of it are devoid of lichens. Its■a a . - spongy or corky, longitudinally furrowed in an undulatory matter, andsarire |, a -V s 1 or brownish gray tint. The ferruginous Huamalies of Guibourt is theC. „,• *'* at a more advanced period of growth. Huamalies bark is the produce ofa. coi) S ‘ r ! >n " la < and "ill be described more folly hereafter. White Loxa Cinchona hasand wi /ir' lle resemblance to the young Huamalies bark, with a whitish epidermis,be noticed among the so-called White Cinchonas.

f ) C^ I ‘° 8ITI0N —Crown bark was analyzed by Pelletier and Caventou ( Joum. de• v u. 70), and by Bucholz (Gmelin, Handb. d. Chern. ii. 1283).

S 1 ?* 1 * any!5 ule fmi s ii

Pelletier and Caventou 's Analysis.Jbatc of cinchonia.

S ' late «f lime.

^(U fa ? y mattcr -

^"luhl"' C Um ’ C-

V-ii e rod colouring matter (tannin).0 U)l J ) ' v colouring matter.

>^fcii.

L| ffnin.

Jra y Cinchona.

Bucholz’s Analysis.

Cinchonia. 036

Kinic acid. 117

Kinate of lime. 1-30

Hard resin (red cinchonic). 9 97

Bitter soft resin . 156

Fatty matter, with chlorophylle 0 78Tannin, with some chloride of

calcium (?) . 5 80

Gum . 4‘43

Starch . a little

Lignin . 74-43

Commercial Loxa Bark ,

9980

°ubi

- a h e '| ran (Traite de Pharm. i. 603) states, that one lb. of Loxa bark yields from one1’on |jj'‘ h> two drachms of sulphate of cinchonia. It is somewhat remarkable, thatclionj^'J^n (Bergen , Monogr. Tab. zur 5 ten . Platte) obtained quina, and but little cin-’ r, mi Loxa bark, as the following table shows:—

One lb. of Loxa Bark. Sulphate of Quina

elected quills.. . 12 ^ rs ,

lately thick quills and pieces . 2 f rrs .

and middling quills . 2 , v srs ,

following « M* y ‘“ * lt ' *-* - L "“

graphic : A. margxnata; Giyphisfumdos k 1 . d peruviana . Lecanora

uurata; Collema azureum; and C. diaphanum.

Pure Cinchonia.

4$ grs-2$ gro-

8ft

! «a

— Quinquina de Lima, Guibourt. China Huanuco j Graue China, Ber-(i |)pig na Huanuco, Yuanuco, Guanuco, Havane, Goebel. Cascarilla provinciana,

e ' ?,ll y eh Y ‘ ‘—This bark was first known in Spain in 1799. One hundred andllui- 6S ^ S <d ’*■ were brought to Santander, in that year, by the frigate La Yeloz ;A then^ ' V . as appointed to examine the cargo. He found in the chests a thick bark,No; a( Unkn «wn to the botanists of Peru , mingled with the barks of C. nitida and C./‘"‘t l ar t a ' and with those of the species which Tafalla has designated by the termIt p yalisaya (Laubert’s Memoir in Lambert’s Illustr. of the Genus Cinchona ,

kar ks (Hooker’s Comp, to the Bot. Mag. No. viii. p. 244) says, the trade in

2. Cinchona Huanuco.—Gray or Silver Cinchona , E.Cinchona cinerea, E.

(Bark of Cinchona micrantha y E.)

sod . <d Huanuco commenced in 1785; but that in 1815 it almost entirely ceased.a s the quality of Huanuco bark is excellent.

l W °f yellow bark will be likely again, I should think, to give a fresh im

l O U Oc .1- - . .. 1*. <■ IT 1 I. ..II _..a.