An essay on electricity. Explaining the theory and practice of that useful science, and the mode of applying it to medical purposes : with an essay on magnetism / by George Adams.

  • Adams, George, 1750-1795.
Date:
1785
Catalogue details

Licence: Public Domain Mark

Credit: An essay on electricity. Explaining the theory and practice of that useful science, and the mode of applying it to medical purposes : with an essay on magnetism / by George Adams. Source: Wellcome Collection.

    41/528 (page 25)
    larly attentive to leave no moifture on the ends of the cylinder, as any damp on thefe carries off the eledtric fluid. Glafs pillars have been fometimes ufed to fup- port the cylinder, but they can be of no ufe, unlefs the foregoing circumftance is attended tp; and if that is obferved they are fuperflu- ous. Take care that no duft, loofe threads, or any filaments adhere to the cylinder, its frame, the condu&ors, or their infulating pillars; becaufe thefe will gradually diflipate the eledtric fluid, and prevent the machine from adting power- fully. Rub the glafs cylinder firfl: with a clean, coarfe, dry, warm cloth, or a piece of wafli leather, and then with a piece of dry, warm, foft filk ; do the fame to all the glafs infulating pillars of the machine and apparatus; thefe pillars muft be rubbed more lightly than the cylinder, becaufe they are varniftted. A heated iron is fometimes placed on the foot of the conductor, to evaporate the moift- ure which would injure the experiments. In