A GUIDE TO 



THE STUDY OF FISHES 



By DAVID STARR JORDAN 



2 volumes, 934 illustrations. 1223 pp. |i2.oo net, postage extra. 

 32 pp. Prospectus free on application. 



A comprehensive work, at once scientific and popular, by 

 the leading American ichthyologist. It discusses the structure, 

 habits, evolution, and economic value of fishes. It treats of the 

 characteristics of chief groups, emphasizing those which by 

 reason of divergence from typical forms are of especial interest. 

 Extinct fishes are discussed along with their living relations. 

 Nothing has been spared to make the work, in illustration and 

 mechanical execution, worthy of a magnum opus. There is an 

 abundance of pictures in half tone and other forms of black-and- 

 white illustration, and the frontispiece of each volume shows in 

 colors some of the remarkable fish brought by the author from 

 his Pacific explorations. There are also portraits of the world's 

 leading ichthyologists. The work is issued in two sumptuous, 

 large octavos, and is intended to be a valuable handbook for 

 technical students and interesting to anglers and nature lovers. 



AMERICAN INSECTS 



By VERNON L. KELLOGG 



With 812 figures and 11 colored plates. 647 pp. $5.00 net, 

 postage extra. 



This sumptuous volume covers the entire American insect 

 world, including moths, butterflies, and beetles, to which separ- 

 ate volumes are often devoted. Written in a style to interest the 

 general reader, the arrangement is systematic and reasoned, and 

 it is probably the most valuable handbook of the subject for the 

 technical student or amateur collector. Habits, life, history, 

 relations to man, to other animals and to plants are given special 

 prominence. It is distinguished by much new matter, the results 

 of the author's ingenious observations, and by many original 

 pictures illustrating species not befsre figured in general insect 

 books. 



HENRY HOLT & CO. ^^ W^«|*,23d^|treet 



