THE "^'"' 



DEPTHS OF THE OCEAN 



A GENERAL ACCOUNT 

 OF THE MODERN SCIENCE OF OCEANOGRAPHY 

 BASED LARGELY ON THE SCIENTIFIC RESEARCHES 



OF THE NORWEGIAN STEAMER 



MICHAEL SARS 



IN THE NORTH ATLANTIC 



BY 



Sir JOHN MURRAY, K.C.B., F.R.S., etc. 



OF THE 'challenger' EXPEDITION 

 AND 



Dr. JOHAN HJORT 



DIRECTOR OF NORWEGIAN FISHERIES 



WITH CONTRIBUTIONS FROM 



Professor A. APPELLOF, Professor H. H. GRAN 

 AND Dr. B. HELLAND-HANSEN 



MACMILLAN AND CO., LIMITED 

 ST. MARTIN'S STREET, LONDON 



1912 



