Lightning Rod Conference Report of the Delegates from the Following Societies, Viz.: Meteorological Society, Royal Institute of British Architects, Society of Telegraph Engineers and of Electricians, Physical Society. With a Code of Rules for the Erection of Lightning Conductors; and Various Appendices

Chapter II. is an attempt to show that electricity is evolved by the

Chapter 245 wordsPublic domain

friction of “gaseous matter” against water, or _vice versâ_. Ordinarily the issuing vapour in the hydro-electric machine is positively, and the boiler negatively, electrified; but cases occur where this is reversed. According to the author, water by friction against gaseous matter or air, becomes positively electrified.