PREFACE. IX 



materials for each particular purpose, will 

 easily comprehend the principles of the Lin- 

 naean Artificial System, which claims his at- 

 tention in the seventh chapter. This, he will 

 soon perceive, is to be understood merely as 

 a dictionary, to enable him to make out any 

 plant that may fall in his way. He will learn 

 to reduce such plant to it's proper class and 

 order, in some systematic work, where he will 

 trace out in progression it's genus and species, 

 with every thing that any author has record- 

 ed of it's history or use. A complete set of 

 original figures, explanatory of this artificial 

 system, is here subjoined, the want of such, 

 in the above-mentioned Introduction to Bo- 

 tany, having been complained of. The chap- 

 ter in question, after a few remarks on no- 

 menclature and generic characters, closes 

 with a detailed exposition of the principles 

 and intention of the Linnaean definitions of 

 species. Some of these rules have hitherto 

 been applied to Latin composition only ; but 

 it does not appear that they may not be kept 

 in view, though less strictly, in any language ; 

 and the laws of discrimination and definition 

 are absolute in themselves. 



