96 
tributed, perhaps, more than any other travellers towards a more 
correct knowledge of the Peruvian Barks; but it was left to M. Wed- 
dell to determine many dubious points in their history by personal 
investigation, correct analysis, chemical and otherwise, and by a series 
of the most beautiful designs. “TI a cherché avec les bücherons, ou 
cascarilleros, ces arbres épars au milieu de ces immenses forêts, à plu- 
sieurs journées de tout lieu habité. Ila campé bien des jours et des 
nuits avec eux; il a accompagné les écorces, objet de son étude, passant 
de mains en mains jusqu'au port où elles s'embarquent, changeant de . 
prix à chaque dépôt ; il a pu, sur tous les points, connaitre par lui-même 
la vérité, qu'on ne sait pas toujours sur les marchés d'Amerique et, à 
plus forte raison, d'Europe." 
He has determined the geographical distribution of the Cinchonas, 
as defined on a map, accompanying the work, of the region they occupy 
in the great Cordillera of the Andes, to extend from the 19th degree 
of south latitude to the 10th of northern, forming the large arch of a 
circle, whose convexity is towards the west: the western portion is 
most central, near Loxa, in the 4th degree of south latitude and in 
the 80th of long. (merid. of Paris) : its extreme north point is near the 
69th, and the extreme south in the 65th degree. A reference to the 
map will show that the chief Cinchona districts are the eastern de- 
clivities of the Cordillera, within the limits north and south above 
. mentioned, and watered ty the sources of the Amazon and the 
Orinoco. 
= Tn our former HET we mentioned the five genera into which 
. M. Weddell thinks fit to divide Cinchona of Linnæus; and for their 
. description, as well as for the ample details of the chemical and 
medicinal qualities, we must refer our readers to the work itself. The 
plates are admirable. The frontispiece represents “ L’Exploitation du 
Quinquina dans les foréts de Carabana au Pérou," and the scene is in 
del Oro. Tab. 1 and 2 exhibit the anatomy 
lusive, are devoted to species of true 
26, to Ladenbergia and Gomphosia ; 
28-80 are charming coloured figures 
fce ; and the concluding plate is the 
cales, montrant la distribution 
