Some Chemical Characteristics of Sea-water at Tortugas. 



77 



25 



o 60°eo' 



80° 15 ' 



80°io 



80°°5 

 25, 



■ ' I 



PORTION OF BISCAYNE BAT, FLORIDA 



SliCfWING POINTS AT WHICH SAMPLES OF WATER WERE 

 COLLECTED 



NAUTICAL MILES 

 I Z 3 



25, 



45 



25 

 40' 



04- SAMPLING STATION 

 Base traced from U.S.CS. Chart No. 166 



Virginia 

 Key 







50 



25. 



25, 



35 



25 

 30'' 



'Cape Florida 



s 



soi.SoldierKey^^^o^^^ 



S 

 A? 



^ 



80 20 



Feather 



80 15' 



f Ragged 

 fKeys 

 ^5 



Sands 



Ke/ 



80° 10' 



25. 



80 05 



