CHAS. E. FOWLER. 269 



analyses have the same purpose, to wil: to determine the 



suitableness of the water for domestic use. 

 Prof, Farrar's analysis is as follows : 



Grains in Imperial Gallon. 

 Silica, 2.64000 



Sesquioxide of Iron, 4.37606 



Carbonate of Lime, 1.27297 



Sulphate of Soda, 3.33753 



Chloride of Sodium, 0.13079 



Cp.ibunate of Soda, 2.54746 



14.30481 

 Organic matter, 0.92864 



Total, 16.23345 



He adds, "whether the organic matter is of animal or 

 vegetable origin I am unable to say. * * The organic 

 matter of less than a grain in weight might do infinitely 

 more mischief than the 14 grains of mineral matter." 

 Prof. Drown' s analysis is as follows: 



Turbidity, slight, clayey. 



Sedimeni;, considerable, earthy. 



Color, 0.38. 



Odor, cold, very faintly vegetable. 



" hot, \^-rj faint or none. 



Residue on ( J^J^J'^^ ignition, 

 evaporation ) pj^ed, 



f Albuminoid Ammonia, 



1 Free " 



Nitr^g^^j Nitrites, 



[ Nitrates, 

 Oxygen consumed. 

 Oxygen consumed in solution. 

 Chlorine, 

 Hardness, 



It will be observed that in the former analysis there are 

 seven determinations, of which six are of mineral constit- 

 uents, while the organic matter is simply noted in 



207 



