Present State of the Genus Cinchona. va 
Calisaya morada (C. Bolivani of Weddell) and the 
Calsaya verde or alta,—not mentioned, as far as I am 
aware, by any author. They say that the latter is a very 
large tree, generally growing very far down the valleys, and 
tn much lower situations than the other varieties. The 
veins of the leaves are never purple, but always a pale green, 
hence the name. The guide Martinez had cut a tree of 
this variety, yielding six or seven cwt. of bark, including 
canuto or bark from the branches; and Gironda had seen 
a tree in the province of Munecas, in Bolivia, which yielded 
ten cwt. of tabla, ortrunk barkalone. The true Calisaya 
of Weddell oniy yields three or four cwt.” 
Such_a tree as Gironda describes might probably be five 
feet in diameter, for Karsten, speaking of the C: lancifolta 
and C. corymbosa, says,* “trees are met with sixty feet in 
heighth, whose stems measures five feet in diameter. A 
single gigantic tree, which truly is not often seen, yzelds ten 
cwi., dried, or thirty cwt. fresh bark.” 
It is highly probable that this is the sort which ought to 
be introduced into India, where its larger size, and probably 
more rapid growth, might render it a more valuable acqui- 
sition than the a. vera itself. Mr. Howard is the more dis- 
posed to think this, since from the size and appearance of 
the bark recently brought into this market from Bolivia, he 
is led to suppose that the collectors may have opened up 
fresh districts in which this kind abounds. 
_ Itis an important feature that the verde variety grows 
lower down the valley, and consequently in warmer regions 
than the other sorts. This may, at times, cause it to be 
less productive in quinine, but nevertheless, the richest 
specimens examined by Mr. Howard presented the charac- 
teristics of this variety. 
The Calisayas of Bolivia thus seem to be most satisfac- 
torily determined, and it remains only that Dr. Weddell 
should add to those labours, for which we are so much in- 
debted to him, by publishing the materials which he has in 
hand to illustrate the remaining varieties of this species. 
The Barks of Loja, or “ Crown Barks.” 
Cinchona officinalis, Linnzus, a. Uritusinga—The term 
officinalis has been (Mr. Howard thinks most correctly) 
restored by Dr. Hooker to the species which grew under 
his care from seeds sent by Don T. Riofrio, from the 
* Med. Chinarinden, p. 28 
