Among the Ancients was a Plant that killed Mice with its bare smell, according to Pliny: The Poets feign it to have sprung from the Foam of the Dog Cerberus, when Hercules dragg’d him out of Hell.
The Aconite Plants also are extremely caustic and acrimonious, in virtue whereof they have produced terrible Inflammations, that end in Mortification. So great was the People’s Dread of this Plant, for its venemous Quality, that they durst not touch it and yet, ’tis said, they made use of it against the Sting of Scorpions, which is supposed to be deadned by the Touch of the Aconite, and restored to its Vigour by that of Hellebore.
N. B. The Root of the Plant is said to cure all Diseases proceeding from Melancholy, as Disaffections from the Hypochondria, Herpes or cutaneous Inflammations.
It is also reported that Arrows dipped in the Juice of Aconite Plants, proved mortal wherever they wounded.
II. The Globe we inhabit, abounds with Variety of Minerals, of a very mischievous Nature; as Arsenic, found in Copper-mines; Orpiment, a Mineral found among Copper-mines, in Stones of different Bigness, Colour and Figure. These, and others of the same venemous Nature, are less or more dangerous, according as their Salts receive a different Force from the metallic Particles.
The Mineral Kingdom is very subject to Damps, or noxious Streams, and often found in Mines, Pits,——and in Kinds various. There are also Exhalations, a sort of Fumes issuing from Body, and diffusing themselves in the Atmosphere. Some make difference between Vapours and Exhalations: The Term Vapour, they say, is appropriated to the moist Fumes raised from Water, and Exhalation, to the dry ones emitted from solid Bodies, as Earth, Fire, Minerals, Sulphur. The nocuous Effluvia sent forth from them may infect the Air, and cause epidemical Distempers, and even new Diseases. About Mines and deep Caverns, are frequently found copious Exhalations continually streaming out, which, in a Moment, destroy any Animal that comes within their reach; so much as the very Insects themselves not escaping: Therefore these Places were by the Ancients called Gehennæ, Averni,—intimating thereby, that a Mineral Pit was Hell, and that Subterraneous Exhalations were Steams from the Fiery Lake.
STRABO takes notice of a Cave or Grotto in Natolia, from whence issue pestilential Vapours that infect the Air: No sooner is any Animal put in, but it immediately dies. Bulls have been put in, and suddenly taken out dead. Sparrows that have been thrown in, dropt down dead instantly.
The Turks fancy it to be haunted by evil Spirits, because those who had the Curiosity to enter it, have either died or fallen desperately sick[[40]].
[40]. Strabo Geograph.
Mineral Poisons are more or less dangerous, as their Salts receive a greater or less Force from the metallic Particles: And hence, as the most virulent may be mitigated by breaking the Points of the saline Crystals, the most innocent Minerals may become corrosive, by combining them with Salts, as is seen in the Preparations of Silver, Antimony, Iron.