CONTENTS 



Introduction by William K. Gregory 



The Structure and Mechanism of Fishes 5 



I. How to Study Fishes Systematically 



Aspects of the Study of Fishes ' 18 



How to Describe and Identify a Fish 19 



The Classification of Fishes 22 



II. A Review of the Kinds of Local Fishes 33 



III. A List of the Fishes Known to Have Occurred Within Fifty 



Miles of New York City 100 



