C 199 ] 
Naples, February 3, 1767. 
Read April 2, QINCE the account of the eruption 
1 7 6 7 * 3 0 f mount Vefuvius, which I had the 
honour of giving to your lordfhip, in my letter of 
the 10th of june laft, I have only to add, that the 
lava continued till about the end of november, 
without doing any great damage j having taken its 
courfe over antient lavas. Since the ceffation of 
this eruption, I have examined the crater, and the 
crack on the fide of the mountain towards Torre dell' 
Anonciata 5 about a hundred yards from the crater 
from whence this lava iffued : and I. found therein 
fome very curious falts, and fulphurs ; a fpecimen of 
each fort I have put into bottles myfelf, even upon 
the mountain, that they might not lcfe any of their 
force, and have fent them in a box dire&ed to your 
lordfhip, as you will fee by the inclofed bill of lading. 
J am fure you will have a pleafure in feeing them, 
analyzed. I have alfo packed in the fame box fome 
lava, and cinders, of this eruption ; there is one 
piece in particular very curious, having the exaCt 
appearance of a cable petrified. I fhall be very 
happy if thefe trifles fhould afford your lordfhip a. 
moment’s amufement. 
It is very extraordinary, that I cannot find, that 
any chemift here has ever been at the trouble of , 
analyzing the productions of Vefuvius. 
The deep yellow, or orange-color falts, of which 
there are two bottles, I fetched out of the very crater 
of the mountain, in a crevice that was indeed very 
hot,. It feems. to. me to be powerful, as it turns filver 
- black 
