..., over the Gulf Stream, which here approaches nearer to the coast than at any other point. An ocean depth of 2000 fathoms or more stretches almost in a direct line from the low sand islands east of Nassau to within a distance of 12 miles of the cape; from the shore the water deepens very rapidly to 100 fathoms, and then falls abruptly to a depth of 2500 fathoms. This great depth, so near the land, a...