Mr. Horner on the Brine Spr'mgs at Drohwlcb, 109^ 



I was disposed to doubt the accuracy of my experiments, until 

 I found that Nicolas,* in his memoir " Sur les Salines des De- 

 partemens de la Meurthe, du Jura, du Doubs, & du Mont," 

 Hassenfratzf in his memoir " Sur le Sel Marin, and Montigny| in 

 his memoir " Sur les Salines de Franche Comte," state sulphate of 

 soda as a constituent part of all the brine springs they examined. 

 There is therefore no reason why this salt should not exist in the 

 brine at Droit wich j especially as it is one so commonly met with 

 in mineral waters. 



It is foreign to the object of this paper to describe the process 

 adopted in the manufacture of salt at Droitwich. It does not differ 

 in any material respect from that employed in Cheshire, of which 

 Dr. Holland has already laid before the public a very full account 

 in his excellent work already alluded to. 



* Annalcs de Chimie, vol. 20. + Annalcs de Chimie, vol. 11, 



+ Memoircs de I'Academie des Sciences, 1762. 



