he devoted himself to this special undertaking until his return to 
_ genus; the detailed history and characters of the species known 
4G. Notices of Botanical Literature. 
his splendid folio Monograph of Cinchona,* the result, in part, 
of a two years’ exploration of the peruvian-bark forests of Bo- 
livia and Peru. Dr. Weddell went to South America with M 
Castelnau (who was well known to the naturalists of the United — 
States a dozen years ago), and explored with him the interior of 
Brazil; but leaving that party on the borders of Bolivia in 1845, 
Burope early in 1848. Dr. Weddell is now on a second visit to 
the same regions. ‘The introduction to his treatise comprises a0 _ 
interesting historical sketch of the principal scientific journeys 
“undertaken into the regions that furnish Peruvian bark, by Con 
damine, Joseph de Jussieu, Mutis, Ruiz and Pavon, Humboldt 
and Bonpland, &c., followed by his own itinerary, and an account. 
of the mode in which the bark is sought, gathered, and prepared 
f 
by the Cascarilleros. hen follows the detailed monograph of if 
the genns Cinchona, the anatomy of the bark, and the general 
characters of all the organs; the geographical distribution of the 
to the author, nineteen in number, and of the respective products 
of those which furnish the different barks of commerce.t Dr 
Weddell separates all the former Cinchone which have the fruit | 
* Histoire Naturelle des Quinguinas, ou Monographie du genre Cinchopa, suit 
dune description du genre Cascarilla et de quelques autres plantes de la mén 
par M. H. A. Weppeit, Docteur en Médecine. Accompagné de 34 planches, dessineg 
= a et Steinheil, Paris: Victor Masson. 1849. (60 franes 
Tt: 
+ itap dd principally in the ce : 
quinine in the fibrous, tissue of the living bark, although the most fibrous speci 
mens | 
are’ not the richest in the latter principle, and the value of a given kind of erie 
e 
be judged, to a certain extent, by the appearance of the fracture. 
distinguishes three modifications of fracture ; the corky, th ous and the filament 
ous ( filandrense), of which the latter indicates a greater richness in quinine than the 
i but less than th 
calyx. The arks, or Gray Barks of Lima or Huanuco, come from C. micra® — 
cha or ©. lanceolata and C. glandulifera. The Red Barks of Lima are yielded by 
- HH brown k of Carth i igi! 4 
; of Cuseo and Arica from ©. pubescens or C, ovalifolia. Cinchom# ~ 
kinds of bark. _ of 
cena 
tion, the Peruvian bark forests are comprised within the extremes of 1200 
