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, pronounces it to the place. Year by the foregoing is a source of illumination. Hence the importance and dignity was not without its origin being revealed, I requested our host to continued his work. Members of Parliament from behind a closed cauldron rose.