T. S. Hunt on the Chemistry of Natural Waters. 55 
ilar springs from Vermont, the Highgate and Alburg springs. 
The waters were sent me in October and November 1861, and 
the results have already appeared in the Geology of Vermont, 
vol. ii, p. 926. Both of these waters, when examined, were 
slightly sulphurous, and yielded the reactions of boric acid. 
The amount of carbonate of soda was estimated from the carbo- 
nate of baryta obtained by the process already mentioned in § 35. 
Highgate. Alburg 
Chlorid of sodium ey tr 808 ake 14 
Sulphate of soda...... "O48 2 Walsh} “024 
Carbonate of soda OR aw aes kt 230 
si lime ‘OEE doa cu aue “036 
. MAGNESIA... ss cece eee e eens OLD a eeeeen 
Potash and borstes js ccwes A Bee eee os undet.  sawiee ss undet. 
In 1000 parts ........ Pr LO” eiwaeeees -452 
dent that a sufficient quantity of the latter water would decom- 
pose the earthy ohionae and precipitate the salts of baryta and 
rontia present; while an excess would give rise to alkaline- 
saline waters containing sulphate and carbonate of soda, such 
as were the three springs of Caledonia in 1847. A falling-off in 
