18 AGRICULTURAL TEXT-BOOK. 



56. SEA WATER, (Schweitzer,) from the English Channel. 

 Water, - 96,474 

 Common Salt, - - 2,706 

 Chloride of Potassium, 76 

 Chloride of Magnesium, - 366 

 Bromide of Magnesium, - 3 

 Sulphate of Magnesia, - - 229 

 Sulphate of Lime, - - 140 

 Carbonate of Lime, ... 3 

 Iodine, - - traces. 

 Ammonia, - * traces. 



100,000 



57. SCUTLKILL WATER, (B. SiUiman, Jr.,) taken from the 

 Fairmount Reservoir, Philadelphia : 



Grains in 1 gallon. 



Chloride of Sodium, - 0.1470 



Chloride of Magnesium, - - 0.0094 



Sulphate of Magnesia, - 0.0570 



Carbonate of Lime, - - 1.8720 



Carbonate of Magnesia, 0.3510 



Silica, - ., 0.0800 



Carbonate of Soda, - 1.6436 

 Organic and other matter, volatile at red heat, 1.2400 



5.5000 



Carbonic acid given off by boiling from 1 gallon, 3.879 cubic 

 inches. 



TlIE SOLID, FIXED, AND INSOLUBLE RESIDUE OF THE SAME 



WATER. 



Grains in 1 gallon. 



Solid residue at 212 fahr. - - 5.50 



Fixed at a red heat, - - - 3.69 



Insoluble in water, - - - - 2.145 



