3 3 3-0*/ 



c *al 



Thewater, being again fet to evaporate, was re- 

 duced to lefs than an ounce, when it was again fil- 

 tred, and gr. ii fs. of a refiduum feparated. This 

 fediment appeared to be nearly of the fame nature as 

 the former j but, on putting it into the mouth, I 

 thought 1 could perceive fomewhat, though very little, 

 of a faltifh tafte, and when thrown into water, it 

 remained all undhTolved. 



The fmall quantity of water which was left, was 

 next evaporated to drynefs, and there remained in 

 the tea-cup gr. xvii. of a yellowim matter, compofed 

 of the thin lamellae of feme fait, and a yellow unc- 

 tuous or oily fubftance. It had rofe into blifters, and 

 emitted a very ftrong fmell of fulphur, while it yet 

 remained hot. 



Some of the faline matter, being put into a folu- 

 tion of the cauftic alkali in diftilled water, occafioned 

 a white cloud j and the fame thing happened when 

 ■fome of it was mixed with folutions of filver in the 

 nitrous acid, and of corrofive fublimate in. diftilled. 

 water. 



In order to feparate the fait from the yellow oily 

 matter, the fediment was thrown into and duTolved 

 in an ounce of diftilled water, and then pafTed 

 through filtring paper, and evaporated to a pellicle; 

 after which, it was fci in a cool place for forty-eight 

 hours, in which time a cryftallifation took place, 

 and I feparated very near gr. xii. of a fait fimilar, in 

 every refpeft, to that of Glauber j but it had ftill a 

 •little of the yellow oily matter adhering to it. This 

 fait had a cool bitter tafte 3 it diffolved eafily in dif- 

 tilled water, and when fome of the native foflil al- 

 kali was, added to this folution,-. it. remained clear j 



though 



