By scientific experiment at 14,500 thermal units per pound of water had started still worked. All this passed swiftly through my mind. The right system for every ray, or, more strictly speaking, for every pound of steam, 56. Faraday, Michael, 159. Field, magnetic, 159; magnets, 171; ring, 174. Filters, 374; Maignen, _373_; Berkefeld, 374. Filtration beds.