4 Prof. Daniell on Sulphuretted Hydrogen 



town in the river, by Her Majesty's schooner Fair Rosamond, 

 on the 9th of October, 1839, about the conclusion of the rainy 

 season." 



This water smelt slightly of sulphuretted hydrogen, and 

 the sediment in the bottle weighed only 0'4 grains, and con- 

 sisted of vegetable matter. The results of the analysis were, 

 per gallon, 



Sulphuretted hydrogen 1*21 cub. in. 



Chlorine 970-92 grs. 



Sulphuric acid 92*10 



Lime 17*36 



Magnesia 33*65 



Magnesium 47*11 



Sodium 55306 



Potassium a trace 



1714*20 



Amount of salts from evaporation . 1718 

 Specific gravity, 1019*0. 

 4. " Water from the river Mooney, which empties itself in 

 the north-east part of Corisco Bay, taken from about a mile 

 inside the month, by Her Majesty's brig Nautilus, September 

 4lh, 1839. Rain had fallen, but the rainy season cannot be 

 considered to have set in." 



This water did not smell of sulphuretted hydrogen, nor did 

 it afford any trace of that gas upon analysis ; the total amount 

 of sediment in the bottle did not exceed 0*1 grain. It con- 

 tained, per gallon, 



Chlorine 1184*11 grs. 



Sulphuric acid 109*80 



Lime 14*17 



Magnesia 44*78 



Magnesium 28*54 



Sodium 732*32 



Potassium a trace 



2113*72 



Amount of salts from evaporation . 2104 



Specific gravity, 1022*5. 

 5. " Water from the river Gaboon, taken at four miles 

 above Parrot and Konicky Island [eight miles up the river], 

 by Her Majesty's brig Nautilus, September 10th, 1839. Rain 



