viii Preface 



a volume of itself. The principal works and their autliors are 

 discussed in the chapter on the History of Ichthyolog}', and 

 with tliis for the present the reader must be contented. 



The writer has hoped to make a book valuable to technical 

 students, interesting to anglers and nature lovers, and instruc- 

 tive to all who open its pages. 



David Starr Jordan. 

 Palo Alto, S.xnt.a Cl.-vr.a County, Cal., 

 October, 1904. 



