Netv Species of Cinchona — Departure from Callao. 4.1 y 



scientific circles. According to the latest estimates (which take 

 cognizance of seven inferior sorts), there have been exported, 

 between 1880 and 1860, not more than 10,000 tons, while of 

 Calisaya, the specially valuable red bark (Cascarilla roj'a), not 

 above 120,000 cwt. have been exported in all dm-ing the same 

 period. While the annual export thus dwindles in dimen- 

 sions from what had generally been suj^posed, there has 

 lately been discovered in large quantities, in the forests be- 

 tween Tarija, Cochabamba, and La Paz, a species of Cin 

 chona, whose bark is said to possess very much the same 

 properties as the Calisaya. The curate of Tarija has offered 

 for sale 3000 cwt. of this valuable bark (called by the In- 

 dians Sucupira). The position of the forests in which this 

 species of Cinchona is found is so favourable for exportation, 

 that the cast of transport from Tarija to Iquique, the nearest 

 port, would only amount to from 8 to 10 dollars per centner. 

 The departure of the mail steamer from Callao de Lima 

 was fixed for the afternoon of 12th June, when several of my 

 friends were so kind as to accompany me on board. In Cal- 

 lao I paid a short visit to H.M.S. Ganges, and the U. S. frigate 

 Merrimac (destined in less than three years to acquire a 

 mom^nful renown in the horrors of civil war, as also imperish- 

 able celebrity as the pioneer of iron navies), one of the finest 

 and most powerful screw-ships of the North American navy, 

 armed at that time with 32 cannon, and of 960-horse power. 

 I had had the pleasure of becoming acquainted with the 

 officers of both ships, partly in Valparaiso, partly in Lima. 



VOL. III. 2 E 



