THE 



CANADIAN NATURALIST. 



SECOND SERIES. 



CONTRIBUTIONS TO THE CHEMISTRY OF 

 NATURAL WATERS. 



J3y T. Sterry Hunt, A.M., F.R.S. ; of the Geol. Survey of Canada. 



II. 



Analyses of Various Natural Waters. 



Contents of Sections. — 35, mode of analysis, date of collection; 37, 

 waters of the first class ; 37, their probable origin ; the elimination 

 of sulphates; 38, separation of lime-salts from waters; 39, earthy 

 chlorids in saliferous formations; brines of New York, Michigan, and 

 England ; foot-note on errors in water-analyses ; 40, brines of weetern 

 Pennsylvania ; waters in which chlorid of calcium predominates ; 41, 

 origin of such waters ; separation of magnesia as an insoluble sil- 

 icate ; 42, waters of the second class ; 43, waters of the third class ; 

 44, waters of the fourth class; Chambly ; 45, other waters of the 

 same class; Ottawa River; 46, waters of Highgate and Alburg ; 

 47, changes in the Caledonia waters ; comparative analyses ; 48, 

 waters of the fifth class ; sulphuric-acid springs of New York and 

 Canada; 49, changes in the composition of these waters ; their 

 action on calcareous strata; 50, waters of the sixth class, their 

 various sources ; 51, examples of neutral sulphated waters ; sulphate 

 of magnesia waters. 



§ 35. The analyses of the various mineral waters to be given in 

 the second part of the present paper, were made according to the 

 modes laid down in the treatise of Fresenius on Quantitative Analy- 

 sis. The carbonate of soda in the alkaline waters was determined 

 by the excess of the alkaline bases over the chlorine and sulphuric 

 acid present. This was generally controlled by the amount of the 

 carbonate of baryta thrown down from a solution of chlorid of 

 barium by a solution of the soluble salts obtained by the evapo- 

 ration of the mineral water; and in some cases, to be specified 

 farther on, this latter process was relied on as the only means 



Vol. II. l No. 3. 



