Chap. XXVIII. QUININE-YIELDING CHINCHON^. 507 



Thus will the successful cultivation of the quinine-yielding 

 chincliona-plants confer a great and lasting benefit upon the 

 people of India, as well as upon the commerce of the whole 

 world ; and the concluding words of Dr. Weddell's Introduc- 

 tion^ may, therefore, with strict propriety, be applied to JMr. 

 Mclvor and his assistants : " Eeste la ressource de la culture, 

 et il faut I'employer. S'il est un arbre digne d'etre acclimate, 

 c'est certes le Quinquina ; et la postirite benirait ceux qui 

 auraient mis a execution une semblable idee." 



While speaking of the incalculable value of quinine-jieldhig 

 chinchona-plants, it must be understood that I include those 

 of the " grey-bark " species, which yield chincJionine ; and it is 

 the more important to dwell upon tliis, because a sentence in 

 the Introduction to IMr. Howard's valuable work is perhaps 

 calculated to give a different impression.^ It is true that 

 chinchonine will not command so remunerative a price in the 

 London market ; yet it produces effects on the system precisely 

 analogous to quinine. To stop intermittent fever, doses of 

 chinchonine require to be one-third larger than doses of qui- 

 nine ; but it is absolutely certain that the former is as good 

 a febrifuge as the latter, and it costs infinitely less. Planters 

 will of course, in the first instance, undertake the cultivation 

 of those species which yield quinine, such as C. succirubra, 

 C Condaminea, C. lancifolia, and 0. Calisaya; but the grey- 

 bark species will yield barks which will afford valuable 

 supplies to the Government hospitals ; and their naturalisa- 

 tion all over the plateau of the Neilgherries and other hill 

 districts will be a great boon to the natives. Hereafter the 

 latter species will well repay the outlay and labour of culti- 

 vation. Even now there is a great demand for cliinchonine ; 



^ Histoire Naturelh des Quinquinas, I quinine, comparatively small good 

 p. 13. will be likely to itsult from tiieir 



' ** From the unfitness of the ' Grey uaturulisation." —Howard, Inlroduc- 

 Bark ' species for the production of lion, p. xiii. 



