VI ADVERTISEMENT. 



ral remarks have been inserted to lighten the details of 

 scientific arrangement. In the absence of a System of 

 Nature adapted to the present state of knowledge, this 

 work, it is hoped, will form a useful guide to the stu- 

 dent of Nature, as, however imperfectly executed, it 

 is the only one in which a consecutive and complete 

 view of the modern classifications of Animals has been 

 offered to the notice of the Public. 



Edinburgh, Htk October 1828, 



