FROM THK SOCIKTY'S GARDEN. 273 



caja or Snrata, tiience into Caupolican or Apolobaniba. the place 

 of its first discovery; and all my care has failed in enabling- nie 

 to find it north of those points. An imaginary barrier exists 

 then beyond which the plant will not go, notwithstanding that 

 the neighbouring valleys appeai'ed to be of the very same nature ; 

 a fact that can scarcely be explained, unless upon the supposi- 

 tion that peculiarities do exist in the most southern valleys of 

 Carabaya which are wanting in tlie north ; and this may pos- 

 sibly be owing to the manner in which the rivers are distributed. 

 I believe, in fact, that I am justified in referring those of tlie 

 district in question to a particular system, possibly dependent 

 upon the Bolivian system, and that those in the other parts of 

 the province lose themselves on the contrary by tlie N. of Peru, 

 in the Upper Amazon. This unexplained attachment whicli 

 certain plants manifest for natural regions, and especially ft)r 

 valleys, is by no means without example; and now that Geo- 

 graphical Botany is obtaining serious attention, science will be 

 enriched more and more with analogous facts." 



"The great reputation of the Quinquina Calisaya has caused 

 such a demand for it, that it will certainly some day disappear 

 completely from commerce, and we shall be obliged to be con- 

 tent with other sorts now despised. It has already disappeared 

 around inhabited places, except in the form of a bush ; and if by 

 mere chance a small tree has remained unobserved in the midst 

 of a forest, its head no sooner becomes visible tlian the hatchet 

 brings it down. For rny own part, when 1 have wished to see 

 the species in all its vigour, it has been necessary to pass long 

 days on foot in the forests, to penetrate them by paths whicli 

 were scarcely passable, and to undergo some of the fatigues 

 which are the ordinary lot of the poor Cascarilleros." 



'' Some idea may be formed of tlie inunense consumption of 

 the bark of this plant, from the fact that the Boli\ian Company 

 exports annually, exclusive of adulteration, more than 4000 

 quintals. It is difficult for the forests to supply for any long time 

 so large a demand." 



Its native station was found by this enterprising traveller to 

 be on the slopes and precipices of mountains as high as 4500 

 or 5400 feet in the hottest valleys of Bolivia and Southern Peru, 

 in forests between 13' and 16° 30' S. lat., and 68°— 72° W. 

 long., in the Bolivian provinces of Enquisivi, Yungas, Larecaja, 

 and Caupolican, and in Carabaya in Peru. 



This plant has been found to require very peculiar manage- 

 ment. Mr. George Gordon, under whose care it flowered in the 

 Society's Garden, states the following to be the manner in which 

 the specimen was treated which bloomed so abundantly in the 

 Society's stove : — 



VOI>. VII. u 



