{ 7° ) 



and fourth fpecies. 1 his foreign zeolite is 

 very white, and forms a group of fmall co- 

 nical bundles, clofely conglutinated, and in- 

 terlediing each other in various diredions ; 

 terminating, at their diverging extremities, in 

 a multitude of irregular cylindrical needles. 

 In the furnace it becomes inflated and con- 

 fiderably lighter, but does not fufe. With 

 oxygenous gas, a hard, milk-white enamel, 

 full of bubbles, is produced. 



If we compare thefe obfervations with 

 the defcriptions of other naturalifls, we fhall 

 find that the zeolites of Lipari have a great 

 refemblance to thofe of other countries j and 

 it may be obferved that the firft fpecies is 

 very fimilar to that of the iOand of Ferro, 

 which Born has defcribed in his Lithophy^ 

 lacimn, and which he has compared to the 

 flala6tical calcedony. 



The fecond fpecies, from its hardnefs, re- 

 fembles fomecryftallized zeolites of the Ifles 

 of the Cyclops of Etna, which, as M. Dolo- 



mieu 



•I 



