INTRODUCTION, XI 



h 



most every section or state. When a plant had 

 received several botanical names^ the obsolete 

 are given as synonyms. 



67. After the names follow the botanical and 

 medical authorities connected, the generic and 

 Bpeciiic characters, the complete botanical des- 

 criptions, the locality or native places of growth, 

 with the general history of the genus and spe- 



ticle 



forming the botanical sections of each 



The medical division contains the sen- 



with 



sible and chemical qualities of the plant, 



the medical properties, including uses, dosea 



and preparations. 



69. Equivalent substitutes, and various re- 

 \s conclude the article. The plan of adding 

 medical substitutes is borrowed from the ex- 



mai 



cellent French work of Feyrilhe on Medical 

 Natural History. 



70. The knowledge of those medical Equi- 

 valents will be found very useful, when the re- 

 quired plants are not obtainable, while some 

 substitute may perhaps be procured. It fol- 

 lows of course that each Equivalent is vice- 

 versa a mutual substitute in most cases: although 

 the plants are seldom identical in power and 

 activity. 



71* Botanical accuracy has been strictly at- 

 tended to throughout, and all the descriptions 

 are original. To avoid other novelties, but few 

 improvements have been attempted or sugges- 

 ted iu nomenclature or criticism. The locali- 

 ties are however greatly extended. 



72. In the medical part, brevity has been 

 adopted, without impairing accuracy. All the 



