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.
- Freke, John, 1688-1756.
- Date:
- 1746
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.
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![[• 4-8 ] Notwithflanding what has been ad¬ vanced concerning the JEther, which is believed to inhabit our Atmo- iphere, I chufe rather to fuppofe, that the Air is an Element as well as Fire, and that the Difference in it is only be¬ twixt heavy and foul Air, and clean and light Air. That which comes on the highefb Mountains is clean, and free from our Fogs and Putre¬ factions, and, confequently, more elaftic. As a Proof of this, T would re¬ commend the following Experiment: Fill a Bladder with this clean Air ; then prefs it with a Weight juft fuf- ficient to make it give way ; and you will find, that, by reafon of its Elaf- ticity, it will yield much further, than if it were fill’d with the other Air, which is impregnated with foggy and aqueous Particles. Now,](https://iiif.wellcomecollection.org/image/b30349783_0066.jp2/full/800%2C/0/default.jpg)
