goes away into Flaming Smoke. For the Charcoal and Sulphur easily take fire, and set fire to the Nitre, and the Spirit of the Nitre being thereby rarified into Vapour, rushes out with Explosion much after the manner that the Vapour of Water rushes out of an Æolipile; the Sulphur also being volatile is converted into Vapour, and augments the Explosion. And the acid Vapour of the Sulphur (namely that which distils under a Bell into Oil of Sulphur,) entring violently into the fix'd Body of the Nitre,...

since Oil of Sulphur _per Campanam_ is of the same Nature with Oil of
Vitriol, may it not be inferred, that Sulphur is also a mixture of
volatile and fix'd Parts so strongly cohering by Attraction, as to
ascend together in Sublimation. By dissolving Flowers of Sulphur in Oil
of Turpentine, and distilling the Solution, it is found that Sulphur is