( 399 ) 

 ver, proved the prefence of the muriatic 

 acid. 



The lava of Stromboli, thrown out of its 

 crater, furiiifhed two grains of pure water. 



Another lava of Stromboli, of the fame 

 fpecies, but which, from its being found 

 buried deep beneath other lavas, muft evi- 

 dently have been thrown out before they 

 were, produced 71 grains of water in which 

 was contained a portion of muriatic acid ; as 

 was' difcoverable by touching it with the 

 tongue, and ftill more decisively by the fleecy 

 ilreaks produced by the nitrate of filver. 



TTie lava which iflued from Etna in the 

 year 1787, and which, like that of Strom- 

 boli, was ftill warm when I colIe(fled it, 

 gave water to the amount of 6 grains, w^hich 

 in every refpe«2: refembled diftilled water. 



From a folid pumice of Lipari I obtained 

 24I grains of water, which was acid to the 

 tafte, changed the tin<5lure of turnfole to 



red. 



