An essay to shew the cause of electricity; and why some things are non-electricable : in which is also consider'd its influence in the blasts on human bodies, in the blights on trees, in the damps in mines, and as it may affect the sensitive plant, &c / In a letter to Mr. William Watson. By John Freke.

  • John Freke
Date:
1746
Catalogue details

Licence: Public Domain Mark

Credit: An essay to shew the cause of electricity; and why some things are non-electricable : in which is also consider'd its influence in the blasts on human bodies, in the blights on trees, in the damps in mines, and as it may affect the sensitive plant, &c / In a letter to Mr. William Watson. By John Freke. Source: Wellcome Collection.

    27/76 page 9
    [9] The Reafon to be given why a greater Quantity of Fire is produced from Steel Filings, than from any other Thing, I take to be owing to a.larger Share of that Element which is impacted in it from its being made out of Iron long impregnated with Fire. Many other Bodies have a&ual Fire impacted in them, as Flints, and many other hard Stones and Metals; but whenever you produce Fire from Steel-Filings, you find that Steel melted : So when Fire is produced from Stones, and the like, each Spark is Part of that Stone burnt to a Calx, ■ f* . t? • Now, as I am endeavouring to fhew to you the natural Cohefion of Fire, and the Propenfity there is in it to extend itfelf, I fhall offer to C your
    digitised image 1
    digitised image 2
    digitised image 3