154 



DEPARTMENT OF THE NAYAL SERVICE 



6 GEORGE V, A. 1916 



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Fiff 5 — Proi]le section of the St. Croix River at the Biological Station. Aug. G. Tide rising (I to S flood). 

 Fig. 6.— Profile section of the St. Croix River at the Biological Station, Aug. 7. Tide falling (J to ^ ebb). 



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Fig. 7.— Temperature curves at Station 5 : (a) Aug. 10, flood ; (b) Aug. 6, § ebb. 

 Fig. 8.— Tenii)erature curves at Station : (a) Aug. 10, floxl ; (b) Aug. 0, ,i flood. 

 Fig. 9.— Temperature curve.s at Station 7 : (a) xVug. 10, flood ; (b) Aug. 6, flood. 

 Fig. 10.— Temperature curves at Station 8 : (a) Aug. 10, \ ebb ; (b) Aug. 6, flood. 

 Fig. 11.— Temperature curves;at Station 9 : (a) Aug. 10, \ ebb ; (b) Aug. G, ebb. 

 Fig. 12.— Temperature curves at Station 10 : (a) Aug. 10. \ ebb ; (b) Aug. 7, § ebb. 



