412 Voyage of the Nov ar a. 



served to myself, a solitary individual, to tread the scenes, 

 where Humboldt once collected the first valuable contribu- 

 tions to science, and even then my time was so limited that 

 my attention had to be confined to the capital of Peru, and 

 the neighbouring country. Under these circumstances such 

 a project as a regular scientific excursion deep into the heart 

 of the Cinchona forests was entirely out of the question. I 

 did not fail, however, to translate into Spanish and English, 

 the disputed points which Dr. Junghuhn had requested me 

 to ascertain for him, so that I might obtain such informa- 

 tion upon these interesting questions from such of the 

 friends I made in Peru or Chile as seemed likely, either in 

 their own persons or by the opportunities for natural studies 

 that might happen to characterize their place of residence, to 



minea, var. lucumcsfolia, laurifolia, lanceolata, as also C. cordifoUa, C. ovata, and 

 var. erythroderma. 



12. Is the pure red China bark actually obtained from the C. ovata, var. erythro- 

 derma of Weddell, as would appear from an article by Howard in " the Pharma- 

 ceutical Journal for October, 1856 ?" The leaves of that variety have the most 

 resemblance to those of the three young trees brought over, which we now pos- 

 sess in Java, and which I have spoken of as Cinchona cordifoUa. 



13. The experiments in acclimatization of the above-named species in Java, 

 especially in Western Java, which, it must be admitted, has a very much more 

 moist, rainy climate than Peru, and still more so than Southern Bolivia, where 

 the Calisaya chiefly grows, have already undergone several phases, and it has suc- 

 cessfully struggled with numerous obstacles, some natural, others the result of 

 failures of the earliest cultivators. The species named C. Condaminea, var. lucu- 

 mcefolia, has shown itself more susceptible of being acclimatized than the C. Ca- 

 lisaya, and at present (May, 1858) promises to produce from 50,000 to 70,000 

 ripe fruit, within a few weeks, all fit for reproduction. Apparently the climate 

 and other physical conditions of the locality in Java, where the cultivation has 

 been carried on, have corresponded with those natural conditions which enable 

 this plant to grow so abundantly in its native soil of Peru." 



