DEPTH OF THE OCEAN 43 



Between and 1000 fms. about 7 million sq. m., or 10% 

 „ 1000 „ 2000 „ „ 12 „ „ 18% 



„ 2000 „ 3000 „ „ 45 „ „ 65% 



Over 3000 fathoms „ 5 „ „ 7% 



69 100 



General Remarks. — When the figures given 

 in the foregoing tables for the Atlantic, 

 Indian and Pacific Oceans are compared 

 with the figures for the whole ocean, the 

 same general features may be recognised. 

 The largest area is always that between 

 2000 and 3000 fathoms (48 per cent, in 

 the Atlantic, 59 per cent, in the Indian, and 

 65 per cent, in the Pacific, as compared with 

 58 per cent, for the whole ocean), and the 

 smallest that exceeding 3000 fathoms (6 or 

 7 per cent.). The Atlantic has the largest 

 proportion of shallow water less than 1000 

 fathoms in depth (26 per cent., as compared 

 with 10 and 11 per cent, for the Pacific and 

 Indian Oceans respectively and 16 per cent, for 

 the whole ocean), while the area between 1000 

 and 2000 fathoms varies from 18 per cent, 

 in the Pacific to 24 per cent, in the Indian 

 Ocean, the area for the Atlantic and for the 

 whole ocean being 19 per cent, in each case. 



The volume of dry land above sea-level has 

 been estimated at 23 millions of cubic miles, 

 the volume of the waters of the ocean at 324 



