CATALOGUE OF PHILOSOPHICAL APPARATUS, &c. 39 



Drawer 1 10. Sublimations from Vesuvius. 



For the contents of Drawers 96 i TO, consult " Volcanos," ch. 12. 



Drawers i ii 113. Specimens from Ischia. 



Including the trachyte and tuff with tertiary shells from Mount 

 Thabor, the lava of Capo d'Arso, the tuff from the summit of 

 Mount Epomeo, the pumice of Castiglione, and the salts which 

 effloresce at the hot springs of the Island. 



The lava of Capo d'Arso is more glassy than is the general case with those of Vesuvius. 

 Hence it decomposes so slowly that no vegetation is found upon it, although it was ejected so 

 long ago as 1302. 



Drawers 114 1 16. Suite of rocks from Mount Vultur and its neighbourhood. 

 Including the lava of Melfi with Hauyne, the lava and tuff of the 

 volcano itself, and various masses ejected by it. 



See Volcanos, ch. xi. and a memoir of mine in the Transactions of the Ashmolean Society. 

 The mineral Hauyne is only found here, near Rome, and near Andernach on the Rhine. Its 

 composition is 3CaO, 2 Si O 3 +2(A1 2 O 3 , Si O 3 ) + 2(KO, SO 3 ,) containing therefore a 

 Sulphate of Potassa united with a Felspathic mineral- 



LIPABI ISLANDS. 

 Drawer 1 17. Pumice and tuff. Island of Lipari. 



Drawer 118. Obsidian and other allied rocks. Island of Lipari. 



With them are placed, as points of comparison, specimens produced by 

 artificial heat by Gregory Watt, which show the effect of slow and 

 rapid fusion upon Basalt. 



Sublimations from the Island of Volcano. 



Including Boracic acid*, Sal Ammoniac and Sulphur. 

 N. B. This mineral (Obsidian) is closely allied to Pumice, as Abich's analysis shows : 



* The only European locality for this substance, except the Lagoons of Tuscany, for which see 

 Drawer 5, p. 4. B. 



