T. 8S. Hunt on the Chemistry of Natural Waters. 211 
all sulphated, and differing in the proportions of carbonate of soda 
present. In 1865 
here described exceeds 53°, which has been observed for two 
springs at Chambly, about twelve miles from Montreal. Inas- 
uch as the mean temperature of this city, as deduced ie the 
is 44°-67, t 
ee out the importance of further observations, (§ 48). The 
ing was found to be 46°, and that of Caxton, 49° F. 
| period with those which issue from, and in many cases owe 
their saline impregnation to, strata of comparatively modern 
n. 
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