SALINITY OK OCEAN-WATER AT FOWEY ROCKS, FLORIDA. 315 



Chloride content and salinity of sea-ivatcr in the vicinity of the coast of Florida. 



Source. 



Tortugas, Florida: 



Off Loggerhead Key' 



Reef, Loggerhead Key' 



Southwest channel' 



Southwest channel" 



Southwest channel 



Wharf, Fort Tefferson^ 



Off Garden Key 



Off Garden Key 



Moat, Fort Jefferson" 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Moat, Fort Jefferson 



Around Biscayne Bay, Florida: 



Mouth Miami River inside bar near Royal Palm Dock. , 

 1.5 miles east of Miami at II feet depth in government 



channel north of Virginia Key. 



Off Cormorant Point (tide ebbing) 



I mile west of west point of Key Biscayne near inside 



P and O marker. 



0.25 mile west of Old Man Beacon 



3 miles northeast of Black Ledge 



0.5 mile west of Soldier Key 



In channel through Featherbed Bank 



1.5 miles west of Fowey Rocks Light, outside bay 



In channel south of Key Biscayne and 0.5 mile south of 



Old Florida Cape Light, outside bay. 

 At red buoy outside bar across entrance to Bear Cut, a 



mile southeast of Virginia Key, outside bay. 

 Near black buoy 7, in Biscayne Bay, 



Near red buoy 4, inside Key Biscayne 



Off Fowey Rocks'' 



Andros Island: 

 West side of island, ; miles west of the west end of South 

 Bight. 



East side ot island, off Cocoanut Point 



East side of island, bottom sample, off Cocoanut Point. 



Dai 



1910 



June 1912 



May and June 1913 



June 19 1 2 



June 27, 1914 



June 1912 



May 25, 1913 



June 14, 1913 



June 1912 



Jan. 27, 1913' 



Jan. 27, 1913=' 



Feb. 27, 1913' 



Feb. 27, 1913^ 



May 25, 1913 



June 14, 1913 



June 15, 1913 



4'' 30™ a. m., June 23, 1913 . . 

 2 p. m., June 23, 19 13 



4'' 45"° a. m., June 23, 1913. . 

 5'' 30"° a. m., June 23, 1913 . . 



6 a. m., June 23, 1913 



7 a. m., June 23, 1913 



9 a. m., June 23, 1913 



8 a. m., June 23, 1913 



II a. m., June Z}, 1913 



1 1"" 45" a. m., June 23, 1913 . . 



jh [-m p p,^ June 23, 1913. . 



2 p. m., Sept. 6, 1914 



2 p. m., Sept. 6, 19 14 



Sept. 12, 1914, ti> Oct. 17, 1915 



May 14, 1914 



May 30, 1914 



May 29, 1914 



Chloride. 



19.99 



15 45 



17.30 



19 93 

 21.51 



20.15 

 20.26 



Salinity. 



36.11 

 27.92 



31.26 

 36.00 



38.86 

 36.40 



36.60 



■Computed from report of analysis by G. Steiger, U. S. Geological Survey Laboratory, published in The 



Data of Geochemistry, by F. W. Clarke, U. S. Geol. Survey Bull. 491, p. 113, 1911. 

 -Tested by D. J. Matthews at the Plymouth (England) Laboratory. 

 '.'\verage of tests of daily samples on ebb and flood tide. May 20 to June 16, 1913. 

 ■"During rain. °.\fter rain. 'Corrected average of 388 tests of daily samples. 



