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 HjSOi. 



'Sample filtered, washed, and dried over H2SO4. 



'25 per cent soluble SiOj; the rest of the silica appears to be white sand. 



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



