BOTTOM SAMPLES, MURRAY ISLAND, THE BAHAMAS, AND FLORIDA. 269 



Mechanical analyses of Bahaman bottom samples. 

 [Graphically illustrated on plate 94.] 



Chemical analyses of oolite and bottom samples from Florida and the Bahamas. 



(By W. C. Wheeler.) 



'Sample washed and dried over H 2 S04. 



2 Sample filtered, washed, and dried over H 2 SO«. 



•25 per cent soluble Si0 2 ; the rest of the silica appears to be white sand. 



'Saline salts not washed out by water in the preparation of the sample. 



