JAN. — MAE. 1857.] Peruvian Bark-iree, 
211 
capacity of Botanists together with M. Dombey, an able French 
physician. After continuing their labors for 11 years they publish- 
ed the results in the Flora Peruviana and in the Quinologia which 
appeared subsequently from the pen of Don FFippolito Ruiz. 
Their researches tended greatly to enlarge the existing knowledge 
of the subject. They established several additional species of the 
genus Cinchona and opened a new source of supply from the forests 
of lower Peru and Chili. 
Much however still remained to be discovered and although addi- 
tions to the stock of inform^ation left by them were contributed by 
Humboldt and Bonpland, Lambert, Poppig, and others, it remain- 
ed for M. Weddell to bring the subject in a comprehensive form 
before the public. 
His first journey in search of the Cinchona trees commenced in 
August 1845. Proceeding through the Chequito country in the 
province of Bolivia he directed his course southwards towards the 
Rio Grande, crossed the Cordilleras to Tarija which he reached in 
January 1846 and determined the most southern limit to which the 
genus reaches, near the 19° of S. Lat. where it is represented by 
the C. australis. He then after the rains crossed the Andes to La 
Paz, the emporium of the bark trade of Upper Peru and in the 
course of his journey, identified for the first time the tree pro- 
ducing the Calisaija bark which he named C. calisaya. In the lat- 
ter part of 1847 he explored the eastern slopes of the Andes and 
came upon some of the richest forests of Cinchona he had yet met 
with particularly those on the Rio Ayopaya and in the province of 
Yungas. 
It was here that he obtained the most precise information of the 
mode of discovering, felling, barking, transporting and selling the 
qiiina barks, his account of which is well worth quoting. 
" The name of cascctrilleros,'^ says M. Weddell, " is given to the 
men who cut the cinchonas in the woods ; an appellation equally ap- 
plying to those who are specially engaged in this commerce. The 
former, and of these alone I will speak here, are in general men 
who have been brought up to this laborious occupation from their 
infancy, and are accustomed by a kind of instinct to guide them- 
