No. 75.] m 



Sulphate of lime, &c., 0'85 



Common salt, • - - - - -17*35 

 Water, 81-80 



100-00 



The Lockpit sample, therefore, contains a larger proportion of com- 

 mon salt, also of earthy chlorides, usually denominated impurities. 

 Twenty-eight to thirty gallons of brine of this strength, would yield a 

 bushel of merchantable salt. 



If this brine should be abundant and the location favorable, salt 

 might be advantageously manufactured from it by the solar evaporation 

 process. Should the mode by boiling be pursued, great care will be 

 required in removing the deliquescent chlorides, by long drainage of 

 the salt, or by washing it with strong brine before it is put up for use. 



With this brine is associated small, but very beautiful and transpa- 

 rent crystals of selenite. They seem as if deposited by a v/ater strongly 

 charged with the sulphate of lime. This will account for the small 

 quantity of this salt which is found in the brine, A particular descrip^ 

 Uon of these crystals will be given under the appropriate head. 



Brine Springs of York, Livingston county. Prof. Dewey states that 

 this brine gives evidence of a large proportion of iodine, on the applica- 

 tion of the usual tests. (HalVs Report on tht Geol. ^th Dist.^ p. 315.) I 

 have had no opportunity of repeating these experiments. It is very- 

 desirable to ascertain the proportion in which this substance is found. 



ALKALINE EARTHY MINERALS. 



CELESTINE. 



(Mineralogy of New- York, page 210.) 



To the localities of this somewhat rare mineral, I may add its oc- 

 currence in projecting points on black marble, at Watertown, Jefferson 

 county. [Emmons^ Rep. on the Geol. 2d Dist., p. 111.) The fibrous 

 variety described as occurring in the town of Stark, Herkimer county, 

 exactly resembles that from Tornberg, in Saxony. 



STHONTIANITE. 



(Mineralogy of New- York, page 212.) 



This interesting mineral, of which we have heretofore had only one 

 or two localities in this State, occurs, according to F. B. Hough, in 

 considerable quantities in the town of Theresaj Jefferson county. (Sil- 



