PREFACE. 



THIS book is intended to give an outline of the Animal 

 Kingdom, and thereby to present the elementary facts 

 and principles of Zoology. 



In its preparation the author has freely used all the 

 materials at his command. He is under special obliga- 

 tions, however, to the writings of Agassiz, Huxley, 

 Dana, Owen, Milne-Edwards, Siebold, Clark, Gill, Baird, 

 "Verrill, Packard, Rollestone, Flower, Woodward, Morse, 

 Cones, Weinland, and others whose names will be found 

 in connection with the treatment of the various subjects. 



As there is not yet any universally accepted system of 

 classification of the various forms which belong to the 

 Animal Kingdom, the more modern systems are, in most 

 cases, presented, and then such schemes are adopted as 

 will, on the whole, be of the o-reatest aid in studying the 



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various animal forms on the one hand, and in studying 

 the writings of zoologists, on the other. 



JN T o attempt is made to describe species, but the animals 

 are described in groups. The numerous species figured, 

 however, serve to make the student familiar with many 

 of the leading forms in each group. 



About five hundred of the wood-cnt illustrations are 

 from the author's "Manual of Zoology" and, in most 

 cases, were drawn and engraved expressly for that work 

 apart of them from nature, and the others mainly from the 

 special works of Cuvier, Schinz, Audnbon and Bachman, 

 Wilson, Holbrook, Storer, Dekay, Harris. Say, Sanborn, 

 Einmons, Binney, Woodward, Gould, Lea, Conrad, 

 Agassiz, Miiller, Dana, Milne-Edwards, Verrill, Ehren- 

 berg, Huxley, and Wood. About thirty have been drawn 

 and engraved expressly for this book mainly from the 

 works of Huxley, Griffith and Henfrey, Owen, Pouchet, 

 and Carpenter. 



