JAN. — MAR. 1857.] 
Peruvian Bark-tree. 
never serve for the culture of the Quinquina-tree, because they lie 
without the tropics, and the difference in the temperature of winter 
and summer is too great to suppose that trees that have been used 
to an even temperature through the whole year, would thrive there. 
Similar elevations, with a climate constituted as nearly as possible 
alike, having the same variations by day and night, are to be found. 
On the mountains of Java, floras similar to those of the Quinquina- 
woods of Peru, may indicate the way, the place, the soil probably, 
where the Quinquina may be cultivated with good success. 
" In the opinion of Dr. Junghuhn, the elevation for the culture 
of the Quinquina is to be found at 5000 and 6000 feet, or even 
higher, particularly as wc» can with confidence assert that, in Ame- 
rica, experience has taught us that those sorts which are met with 
in the lower stations produce less Quinine, and are used by the 
Carcarilleros only to mix with the better barks. 
" The experience at first acquired should plead for the correct- 
ness of the assertion of many Dutch naturalists, who have fre- 
quently raised their voices in this important cause, and for the me- 
rited confidence which was reposed in their opinions by the present 
Minister for the Colonies, M. Charles Pahud, under whose direc- 
tion, doubtless to his own satisfaction, this matter was*begun and 
has been so far successfully carried out ; indeed the culture is al- 
ready begun, as we think we have established in this communica- 
tion ; but particularly by advices from Java, by w^hich we are in- 
formed that the culture of the Quinquina is so far advanced that 
they are of opinion that it is impossible for it to Jail. These foreign 
plants have been so acclimated, multiplied, raised from seeds, 
planted out, and all with such good success, that the Quinquina 
plantation is reported as being in a very flourishing state. 
" We are convinced that unless great and not to be foreseen ca- 
lamities befall them, we shall in a few years see Quinquina planta- 
tions at Java yielding the best sorts of Peru and Bolivia. The num- 
ber of trees which may be raised in a few years is incalculable ; but 
if we take for the basis of our calculation, the fact that a small tree 
which arrived at Java three years ago, is now five feet and a half 
high, and has given off sixty striplings, then, in a few years, by a 
