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ar a wide diflance from it. Tlie nearer the fcrcral parts 

 of plant* approach to each other in point of rcferablance, 

 there t* lb much the greater reafon for fuppofing a fimi- 

 larity of their virtues. He who undcrftanils nature will 

 hardly doubt of this: daily experience furniihesproofsof 

 it, not only among!* the vegetable tribes, but alfo in the 

 other kingdoms of nature, and this in proportion to the 

 natural aifinitie*. 



The genus of plants which I have now the honour to 

 propofc to the Society, increaicd by the «'.. I 

 feme of the Ids known fpecics, will fervc as a further 

 proof of what lias been advanced. 



Among the many excellent medicines which have 

 retched our knowledge fincc the dMcoverj 

 World, the Peruvian Baik defcrvet undoubtedly the lirit 

 place It lias been tried in vain to find a iubllitutc for it, 

 fcareely any thing having been yet dtfcovcrtd which 

 mighi fupcrfede its inc. The cbftaclet which li roei with 



univeiially adopted, and the (11 

 niom relative to its effects, arc fuflicicuih I 

 they <lo not belong to my (cope, it is tbptifluous to rrcat 

 of them : the cauic of the difference in the experiments 

 made with the Peruvian Bark mult be afcribedin part to 

 the frauds which are practifed in mixing if with other in- 

 : : .:iiilar colour and tallc, though wry differ- 

 ent in operation, and perhaps even of a contrary nature 

 and of a pcrnkiom erica. Men. while anxious in Itap- 

 l»ort 



