PREFACE* VU 



time to attend to more. I have therefore endeavoured 

 to make this treatise acceptable not only to schools, 

 but to students generally. 



As schools are inclined to attend to the classes and 

 orders of Linn sens without much regard to their prac- 

 tical use, I have been particular to give some account 

 of genera and species, and the application of the ele- 

 ments in practice in finding out an unknown plant.'* 

 The classes and orders of Linnseus were construct- 

 ed for no other purpose than to afford a means of ar- 

 riving at a knowledge of genera and species, and a 

 knowledge of them seems not to be of much conse- 

 quence unless applied to this purpose. 



I have added some observations on natural orders, 

 and put down in a concise way the natural orders of 

 Linn sens, and also some account of the anatomy and 

 physiology of vegetables. 



The English terms have been placed first and the 

 Latin included in a parenthesis, after the manner &f 

 Thornton's Grammar. The plants mentioned as ex- 

 amples of the various elementary principles, are gen- 

 erally natives or exotics, which are commonly cultivat- 

 ed. In most cases the common English appellation of 

 the plant is put down first and this followed by the pro- 

 per technical or Latin name in italics, separated by a 

 comma. 



