INTRODUCTION, 
lefTer Arrangements of Clafs, Order, Genus, and Species 
are eftablifhed j and thefe being explained in familiar 
Words, and afcertained by an exadt Reprefentation of 
their Forms, we may proceed with Certainty to the Di- 
ftindions of the Plants themfelvesj their Hiftory and 
their Figures. 
