178 



THE CANADIAN NATURALIST. 



[June 



phates, still retained these elements, though in diminished amounts, 

 and was feebly impregnated with sulphuretted hydrogen. If we 

 suppose these waters to arise from the commingling of saline waters 

 like those of Whitby and Lanoraie, containing earthy chlorids and 

 salts of baryta and strontia, with waters of the fourth class, hold- 

 ing carbonate and sulphate of soda, it is evident that a sufficient 

 quantity of the latter water would decompose the earthy chlorids 

 and precipitate the salts of baryta and strontia present ; while 

 an excess would give rise to alkaline-saline waters containing sul- 

 phate and carbonate of soda, such as were the three springs of 

 Caledonia in 1847. A falling-off in the supply of the sulphated 

 alkaline water has however taken place, and the result is seen in 

 the appearance of chlorid of magnesium and of baryta and strontia 

 in two of the springs, and in a diminished proportion of carbonate 

 of soda in the Sulphur spring. 



These later analyses being directed chiefly to the determination 

 of these changes, no attempt was made to determine the potassium, 

 iodine, and bromine. For the purposes of comparison, the two series 

 of analyses are here put in juxtaposition ; the elements just men- 

 tioned- being included with the chlorid of sodium, and the figures 

 reduced to three places of decimals. The precipitate by a solution 

 of gypsum from the concentrated and acidulated water was re- 

 garded as sulphate of strontia, and calculated as such, but was 

 in part sulphate of baryta. 



TABLE V.— SHOWING THE CHANGES IN THE CALEDONIA 

 SPRINGS. 



