Fog indicates that.

Always foggy here this time o' year." "It is here that the gulf stream meets the cold currents and ice from Baffin's Bay," said Kit.

"The warm current meeting the cold one causes the fog: so they say." "I have seen the statement," remarked Raed, "that these great banks are all raised from the ocean-bottom by the _debris_ brought along by the gulf stream and the current from Davis Straits." "But I have read that they are raised by the melting of icebergs," said Wade.

"The iceberg has lots of sand and stones frozen into it: when it melts, this matter sinks; and, in the course of ages, the 'banks' here have been formed." "Perhaps both causes have had a hand in it," said Kit.
"That looks most probable," remarked Capt.Mazard.

"These scientific men are very apt to differ on such subjects.