20 MINERAL WATERS. 



This spriiiij, althoii2:h ch:ilyl)cate, is also strongly saline, 

 boinp: highly charged with alkaline salts. 



Very near this spring another boils np impregnated with 

 sulphnretted hydrogen. It has 55^ grains of mineral to the 

 gallon. It is strongly im])regnated Avith[snlphur, but does 

 not contain so much saline matter as the others, yet it is a 

 strong chalybeate alkaline water, and I)oth must be very 

 useful in cutaneous diseases, also as an alterative. Water 

 collected from a third s})ring within a few inches contained 

 49 grains of mineral to the gallon, and is similar to the 

 first mentioned only not so strong. 



.These springs perhaps more nearly reseml)le the chalyb- 

 eate springs of Germany than any others in New England, 

 and are deserving of further investigation. 



Next in importance seems to l)e a spring in Lunenburgh. 

 This spring is situated near where the mica slate of the 

 north unites with the talcose slate of th('^)uth ])art of the 

 town, but really issues in the protogine formation of the 

 river valley. It is within about ten rods of the Coimecticut 

 Kiver, and on our warmest days the thermometer stands at 

 4fi^° F. in its water. It is strongly chalybeate,' a gallon of 

 Avater containing 46 grains of mineral, a very large pro- 

 portion of which is iron. It contains : 



Protoxide of Iron, 



Carl)onate of Potash, 



Carbonate of Soda, 



Carbonate of Lime, 

 and a slight trace of magnesium and a residuum of organic 

 matter. I find only a faint trace of sul})hur compounds, 

 and it evolves no gas. This water ?loubtless yv'iW be found 

 very valuable as an alterative and tonic, as it is so strongly 

 impregnated with iron as to impart a yellowish tinge to 

 the water. It is a large spring and like those in Bruns- 

 "wick, is not affected by drouth and only slightly in 

 temperature by the seasons. The extension of the White 

 Mountain Railroad passes on the opposite bank of the river, 

 so this spring is easy of access. 



(To be continued.) 



