VI. An account of some scoria from iron works, which resemble the vitrified filaments described by Sir William Hamilton. In a letter from Samuel More, Esq. to Sir Joseph Banks, Bart. P.R.S

Abstract

Sir, In the very accurate account given of the eruption of Mount Vesuvius in the month of August, 1779, in a letter from Sir William Hamilton, printed in the Philosophical Transactions, vol LXX. part I. p. 42. et seq. among many other equally curious informations, it is said, "Long Filaments of vitrified matter, like spun-glass, were mixed with and fell with the ashes." And in a note annexed it is also said, the "during an eruption of the volcano in the Isle of Bourbon in 1766, some miles of country, at the distance of six leagues from the volcano, were covered with a flexible capillary yellow glass, some of which were two or three feet long, with small vitrous globules at a little distance one from the other."