174 THE CANADIAN NATURALIST. [June 



The water was collected in September 1852. Several other 

 mineral springs occur in this vicinity, one of them belonging to this 

 class, and others to the second and fourth classes. 



8. This water, from the seigniory of Belceil, was collected 

 in 1851. 



§ 44. We shall now proceed to the springs which, in § 34, have 

 been referred to the fourth class — and begin with three analyses 

 of a mineral water from Chambly. Here, on a plateau, over an area 

 of about two acres, the clayey soil is destitute of vegetation and 

 impregnated with alkaline waters ; which in the dry season give 

 rise to a saline effloresence on the partially-dried up and fissured 

 surface. A well sunk here to a depth of eight or ten feet in the 

 clay, which overlies the Hudson River formation, affords at all 

 times an abundant supply of water, which generally flows in a small 

 stream from the top of the well. Small bubbles of carburetted 

 hydrogen are sometimes seen to escape from the water. The 

 temperature at the bottom of the well was found in October 1861 

 to be 53° F., and in August 1865 to be nearly 54° F. The mean 

 temperature of Chambly can differ but little from that of Mon- 

 treal, which is 44°. 6 F., so that this is a thermal water. Another 

 alkaline and saline spring in the same parish has also a temper- 

 ature of 53° F. The water of the spring here described has a 

 sweetish saline taste, and is much relished by the cattle of the 

 neighborhood. Three analyses have been made of its waters, the 

 results of which are here given side by side. The first was 

 collected in October 1851 ; the second in October 1852 ; and the 

 third in August 1864, during a very dry season. 



I. II. in. 



Chlorid of potassium, undet. -0324 -0182 



" sodium, -8689 -8387 -8846 



Carbonate " 1.0295 1.0604 -9820 



" lime, -0540 -0380 -0253 



" magnesia, -090S .0765 -0650 



" strontia, undet. -0045 undet. 



" iron, " 0024 ll 



Alumina and phosphate, u -0063 



Silica, -1220 -0730 -0166 



Borates, iodids and bromids, . . undet. undet. undet. 



In 1000 parts, 2.1652 2.1322 1.9917 



A portion of barium is included with the strontium salt. The 

 water contains moreover a portion of an organic acid, which 



