v_Jr 



PREFACE. 



THE sixth in the series of " FIRST BOOKS of NA- 

 TURAL HISTORY," includes a consideration of Articu- 

 lated Animals, Insects, My'riapods, Arach'nidans, 

 Crusta'ceans, Cirr'hopods, Anne'lidans, and Zo'o- 

 phytes, or radiated animals. 



The volume is illustrated by ninety-one beautiful 

 wood-cuts, executed in his best style, by Mr. G. 

 Thomas, of Philadelphia. 



The etymology of technical words is explained 

 in the text ; and a full Glossary is also appended. 



In the preparation of this volume, besides the 

 text of Edwards and Comte, the works of Cuvier, 

 Lamarck, T. Rymer Jones, Thomas Say, and others, 

 have been freely used. 



The writer takes great pleasure in believing that 

 in supplying a series of elementary books on natural 

 history, his humble labours may be beneficial to the 

 country. As a useful branch of education, natural 

 history seems not to be sufficiently appreciated, or 

 extensively regarded. 



By the term Natural History, we mean that 

 science which embraces a knowledge of the structure 



