250 THE PHYSICAL GEOGRAPHY OF THE SEA. 



PLATE H. PLATE HL 



BROOKE'S DEEP-SEA SOUNDING APPARATUS. 



701. The greatest depths at which the bottom of the sea has 

 been reached with the plummet are in the North Atlantic Ocean, 

 and the places where it has been fathomed do not show it to be 

 deeper than twenty-five thousand feet. 



702. The deepest place in this ocean (Plate XL) is probably 

 between the parallels of 35° and 40° north latitude, and immedi- 

 ately to the southw^ard of the Grand Banks of Newfoundland. 

 The first specimens have been received from the coral sea of the 

 Indian Archipelago and from the North Pacific. They were col- 

 lected by the surveying expedition employed in those seas. A 

 few soundings have been made in the South Atlantic, but not 

 enough to justify deduction as to its depths or the shape of its 

 floor. 



