CONTENTS. 



CHAP . PAGK 



I. INTRODUCTION 9 



II. HOW FISHES BREATHE 19 



III. HOW FISHES ARE CLOTHED .... 28 



IV. TEETH AND SPINES ..... 37 

 V. HEADS AND TAILS 46 



VI. FINS : THEIR USES AND WHAT THEY TEACH US 57 



VII. FISH-LIVERIES, AND WHY THEY ARE WORN 69 



VIII. HOW FISHES FEED 78 



IX. COURTSHIP AND NURSERY DUTIES . . 99 



X. LARVAL FISHES AND THEIR METAMORPHOSES 120 



XI. MIGRATION AND HYBERNAT1ON . . . 138 



XII. TRANSFORMATIONS 152 



XIII. PEDIGREES 166 



XIV. PUZZLES AND PATRIARCHS . , . .193 



