Observations on Mount Vesuvius, Mount Etna, and other volcanos: in a series of letters, addressed to the Royal society, from the Honourable Sir W. Hamilton ... / To which are added, explanatory notes by the author, hitherto unpublished.
- William Hamilton
- Date:
- 1774
Licence: Public Domain Mark
Credit: Observations on Mount Vesuvius, Mount Etna, and other volcanos: in a series of letters, addressed to the Royal society, from the Honourable Sir W. Hamilton ... / To which are added, explanatory notes by the author, hitherto unpublished. Source: Wellcome Collection.
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![not leave Portici till about twelve of the clock, when the lava had reached as far as (4. in Plate I.)—I obferved, in my way to Naples, which was in lefs than two hours after I had left the mountain, that the lava had a&ually covered three miles of the very road through which we had retreated. It is aftoniihing that it fhould have run fo fail *, as I have fince feen, that the river of lava, in the Atrio di Cavallo, was fixty and feventy feet deep, and in fome places near two miles broad. When his Sicilian Majefty quitted Portici, the noife was greatly increafed *, and the concuflion of the air from the explolions was fo violent, that, in the King’s palace, doors and win¬ dows were forced open and even one door there, which was locked, was never- thelefs burft open. At Naples, the fame night, many windows and doors flew open ; in my houfe, which is not on the fide of the town next Vefuvius, I tried the ex¬ periment of unbolting my windows [z]3 jV] The windows at Naples open like folding-doors. 7 when](https://iiif.wellcomecollection.org/image/b3051390x_0039.jp2/full/800%2C/0/default.jpg)
