A treatise on electricity wherein its various phoenomena are accounted for, and the cause of the attraction and gravitation of solids, assigned : To which is added, a short account, how the electrical effluvia act upon the animal frame, and in what disorders the same may probably be applied with success, and in what not / By Francis Penrose.

  • Penrose, Francis, 1718-1798.
Date:
1752
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on electricity wherein its various phoenomena are accounted for, and the cause of the attraction and gravitation of solids, assigned : To which is added, a short account, how the electrical effluvia act upon the animal frame, and in what disorders the same may probably be applied with success, and in what not / By Francis Penrose. Source: Wellcome Collection.

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    and light, with a lefs; fo, wherever there is the greatefh quantity of thefe fmall particles of air, (which we call by the name of fire) in propor¬ tion to what we call grofs air, there the action muft be the greateft; by which means the faid fire or light will expand itfelf, 'till, by mixing with what we call grofs air, it becomes of an u- niformity with it. Now therefore, as experi¬ ments are the fure way either of proving or dis¬ proving any hypothecs; fo, to illuftrate this, I fhall produce fome experiments both from Mr. Freke, and other authors of unblemifhed credit, which prove that air is convertible into light and fire, and alfo that light and fire are convertible back again into air ; and likewife, as fome parts of the air are prefent in all places and things, that therefore, whenever a violent adtion either of folids or fluids is brought on, there light, fire, or heat, are produced. To prove this, Mr. Freke has brought, two very Ample, common, but good experiments — Firft, if you Hide a wax thread, or fmall rope, through your fingers, it will burn them; fo like¬ wife fire is produced, by rubbing two hard bo¬ dies together, or two flicks; or, as is very of¬ ten the cafe, a cart or coach wheel will take fire, for want of greafe. Ano*