Salts. 175 



The Vitriolic when dephlogifticated, is 

 always united to water, and as in the Earth, 

 it muft meet with bodies with which it is 

 capable of combining, I believe it has never 

 been found free from all combination, though 

 it may unite to fome bodies beyond the point 

 of faturation. It is true Mr. Balta/ari fays, 

 he found fome dry concentrated acid, adhe- 

 ring to felenite in a grotto in Monte Zaccolino 

 near Sienna. 7 Roz. but this has been fully 

 difproved by the fubfequent obfervations of 

 Mr. Murray, in the 37th vol. of the Me- 

 moirs of Stockholm. In a combined ftate it 

 is found in various neutral falts. , 



The phloglftigated or fulphurous vitriolic 

 acid, frequently occurs in a free aerial ftate, 

 burfting from volcanic mountains, and alfo 

 in fome caverns and mineral waters. 



Of the other acids, none has hitherto been 

 found in an uncombined ftate, except the 

 Jeadti t V 9 which has lately been found by Mr. 

 H%ff'er> diffolved in the Laguni, or lakes of 

 hot mineral water near Monte Rotundo^ Ber- 

 chiaio, and Caftelnuovo in Tufcany, in the pro- 

 portion of nearly 9 grains in 100 of water. 

 Mr. Mafcagni has likewife found it adhering 

 to fhiftus on the borders of the lakes, of a 

 dirty white, yellow or greenifh colour, and 

 cryftalized in the form of needles, i6Roz. 364. 



This 



