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CONTENTS 



Foreword 

 Introduction 



PAGE 



5 



I. Intelligence and Brain Pattern of Bony Fish 

 II. Brain Pattern — Continued . 



III. The Carps .... 



IV. The Carps — Continued . 

 V. Hearing in Fish ... 



VI. Accessory Organs of Hearing 



VII. The Central Acoustic Lobe 



VIII. The Silence of the Sea and the Voice of 

 Fishes .... 



IX. Flat-Fishes 



X. Flat-Fishes — Continued 



XL The Cod Family 



XII. The Cod Family — Continued 



XIII. The Hake, the Scabbard Fish, Prometheus 



AND NeSIARCHUS 



XIV. The Eel. Anguilla Vulgaris 

 XV. The Anatomy of Gustation 



XVI. Hearing, Equilibrium and the Cerebellar 



Functions 

 XVII. The Valvula Cerebelli 

 XVIII. The Pituitary Body . 

 XIX. The Problem op Pain in Fishes 

 XX. Retrospect and Conclusions 



13 

 21 

 28 

 35 

 42 

 51 

 58 



69 



75 



84 



94 



102 



113 

 121 

 126 



132 

 138 



142 

 149 

 152 



11 



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