CONTENTS 



Part I. — An Introduction, an Explanation, 

 AND A Narrative 



CHAPTER I 



INTRODUCTORY 



PAGE 



Prolegomena. The Origin of the Marine Survey of India. Earlier 

 Marine Surveys in India. The Beginnings of the Exploration 

 of Eastern Seas ; Davis and Baffin ; Drake. Present and Past : 

 a Contrast ........ 3 



CHAPTER II 



A TEDIOUS BRIEF EXPLANATION 



The Marine Survey of India. The Survey Ship Investigator. The 

 Science and Art of Hydrography in General. Deep-sea Sound- 

 ing. Deep-sea Thermometry. Deep-sea Dredging . . 14 



CHAPTER III 



THE WORLD BENEATH THE WAVES 



The Bed of the Ocean. River-borne Deposits. Oozes of Animal 

 and Vegetable Origin. The Red Clay of the Still Abysses. The 

 Pressure of the Ocean. The Cold and Darkness of the Depths. 

 The Lampbearers of the Everlasting Night . . .28 



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