in the Waters of the Ocean. 3 



Upon drawing the cork of this bottle, it was found to smell 

 very strongly of sulphuretted hydrogen. The sediment in 

 the bottle only amounted to 0*5 grain of vegetable matter. 

 Specific gravity to 1018*5. The results of the analysis, cal- 

 culated for the imperial gallon : 



Sulphuretted hydrogen . 6*18 cub. in. 



Chlorine 94-3*14 grs. 



Sulphuric acid . . . 82*70 

 Lime ...... 19*14 



Magnesia 27*68 



Magnesium .... 32*71 



Sodium 563*33 



1668*70 



There was also a trace of potassa in this water. 



The actual amount of dry salts obtained by evaporation, 

 was 1696*0 grains. The difference between this and the re- 

 sults of the analysis is not more than usual in similar cases, 

 and arises from the impossibility of determining the exact 

 mode in which the several acids and bases are combined in 

 the water, and from the difficulty of drying the salts without 

 the decomposition of a portion, at least, of some of them. 



2. " Water from the river Volta, taken [at sea] twenty-eight 

 miles from the mouth, bearing W.N.W., by Her Majesty's 

 schooner Fair Rosamond, latitude 5° 37' north, longitude 1° 10' 

 east, on the 4th of September, 1839; season not rainy." 



This water also smelt very strongly of sulphuretted hydro- 

 gen; the sediment in the bottle did not exceed 0*3 grain of 

 vegetable matter. It contained, per gallon, 



Sulphuretted hydrogen 6*99 cub. in. 



Chlorine. 1411*68 grs. 



Sulphuric acid 92*4-7 



Lime 14*75 



Magnesia 35*70 



Magnesium , . . . 12*46 



Sodium 916*20 



Potassium a trace 



2483*26 



Specific gravity, 1025*4 



Amount of salts from evaporation . 2480*0 

 3. " Water from the river Bonny, taken at anchor off the 



B2 



