NORTHUMBERLAND STRAIT. 



Season of 1908. 



In this strait, it seemed probable that the temperature of the water might 

 show some relation to the direction of the strong tidal flow in opposite directions, 

 where this occurs. The density of the water was not taken, as the water in this 

 Strait is uniformly of the lower density prevalent on the southwestern side of 

 the Gulf of St. Lawrence. 



The deep temperatures were taken to 15 fathoms only, for comparative 

 purposes; as there are few parts of the Strait where the total depth admits of 

 going further. It is probably because of this relative shallowness, that the 

 water attains so high a temperature with the progress of the season; and because 

 the water itself changes slowly, although it makes on the whole in an eastward 

 direction, in accord with the general movement on the southwestern side of 

 the Gulf. Apart from the fluctuation of the tidal streams, there is thus a gradual 

 movement of the water to the eastward. 



The observations are grouped in five periods, which correspond approxi- 

 mately with five successive months; to show more conveniently the change 

 with the progress of the season. Also, for better distinction, the letters originally 

 used for the Stations in 1908, which ran from A to G, are changed to others 

 near the end of the alphabet. 



Station S. — In the deepest part of the Strait between Pictou island and the 



opposite shore of Prince Edward island. From Wood island light, 7| 



miles 109°. (S. 48° E. magnetic.) 

 Station T. — In the middle of the Eastern narrows to the west of Pictou island. 



From Wood island light, GJ miles 224°. (S. 67° W. magnetic.) 

 Station U. — In the middle of the Central narrows off Cape Tormentine. From 



Point Borden, 3J miles 226°. (S. 69° W. magnetic.) 

 Station V. — In the middle of the Western narrows. From West Point of Prince 



Edward island, 5J miles 235°. (S. 78° W. magnetic.) 

 Station W. — In the mouth of George bay. From Cape George, SJ miles 35°. 



(N. 60° E. magnetic.) 

 Station Y.— Off Souris. From Souris head, 7i miles 157°. (S. 2° W. magnetic.) 

 Station Z. — In the eastern end of the Strait. From East Point of Pictou island, 



6 miles 130°. (S. 26° E. magnetic.) 



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