u ADVERTISEMENT. 



Thefe Letters originally con- 

 tained only the rriore curious Particulars 

 in the Animal and Vegetable Syftems of 

 Guiana, and many things have been 

 fi nee added, from the Writer's. Memoirs, 

 which were made withoiit defign of 

 publication, and in feveral inftances do 

 not defcend to fuch minute objects 

 as he could have wHhed ; and he 

 is too fenfible of the imperfections of 

 memory to add much on that autho- 

 rity. 



The Order which has been obferved 

 in thefe Defcriptions, though fomewhat 

 unufual, appears moft natural, and is 

 expofed to feweft inconveniencies. Had 

 the Author firft defcribed the Man- 

 ners and Cuftoms of the Inhabitants, it 

 would have been necefiary to fuppofe 

 many things known, with which the 

 Reader could not be acquainted, and 



confe- 



