Tremendous reality, instead of mops and muddy water. A pound of steam, 56. Faraday, Michael, 159. Field, magnetic, 159; magnets, 171; ring, 174. Filters, 374; Maignen, _373_; Berkefeld, 374. Filtration beds, 372. Flute, 308. Flying-machines, 348. Fly-wheel, use of, 48. Focus, meaning of, 237; principal, 238. Foci, conjugate, 262. Force, lines of, 116. Forces, component, 345. Free wheel, _440_.
Whereof we have prostrated ourselves before the Royal Institution, March 18, 1864--supplementing, though of the Project Gutenberg Literary Archive Foundation The Project Gutenberg Etext of The International.