250 THE PHYSICAL GEOGRAPHY OF THE SEA. 



PLATE n. PLATE HI. 



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 heen fathomed do not show it to Ibe 

 deeper than twentj-five thousand feet. 



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

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

 ately to the southward 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. 



