PHYSICAL OCEANOGRAPHY 



271 



by the relation between the tidal current and the general drift of 

 the water. 



We have already mentioned that the observations made at 



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7.1 2 ant, 



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iO 20 50 



Fig. 182.— The Currents at different Depths at Station 58, 

 SOUTH OF the Azores (12th June 1910). 



Station 49 C lead us to infer that tidal currents exist even in 

 the deep sea. Again, at Station 58, south of the Azores, we 

 made a number of current-measurements from the ship at 

 anchor throughout one complete tide-period. With one of the 



