X ADVERTISEMENT. 



well known to the Patrons of this Work as the 

 author of the Volumes on Beetles, British and Fo- 

 reign Butterflies, and ]\Ioths ; and we trust it will 

 be found equally as attractive as any of the others 

 just enumerated. We expect to present a rich treat 

 to our readers in the Volume on the Fishes of the 

 Essequibo and the rivers of British Guiana, by 

 Mr. Schomburgh, which was more fully detailed 

 in the second Volume on Ichthyology, lately pub- 

 lished. There are now before the Public eleven 

 Volumes on Ornithology (Birds), ten on Mammalia 

 (Animals), two on Ichthyology (Fishes), and five 

 on Entomology (Insects), making in all, along with 

 the present publication, twenty- eight ; and we ven- 

 ture to assert, that there will be found nowhere 

 illustrations of these interesting zoological subjects 

 so copious and well selected as in the Naturalist's 

 Library ; and this altogether apart from the very 

 low price at which those branches of knowledge 

 have been imparted to the Public. 



The circumstance of the last publication on 

 Fishes having been first ready induced us to bring 

 it out before the present, which arrangement we 

 find has occasioned some inquiries on the part of 

 our subscribers. This arose partly from the time 

 taken up in the transmission of the proof sheets of 

 the present Volume to Plymouth for rev-ision ; but 

 this arrangement will ultimately create no confusion, 

 and we merely notice the circumstance in conse- 

 quence of inquiries having been made at us for an 

 explanation. 



