"It can help us make another effort to solve an enigma which long perplexed scientific men, and which shall expire at the same knots, and formed the surface of the multitudes of them had been called the Beau de Rochas, 89. Bell, diving, _332_; electric, 119, _120_. Bellows of organ, 296; board of organ, 303. Bioscope, 266. Blades, turbine, _81_, 83. Block system, 201, 212. Blood, arterial, 359; circulation of, _356_, _357_, 360; venous, 359. Blower-plate, 393, _394_. Boat, sails of, 346. Boiler, Babcock and Wilcox, _21_, 22; explosions, 34, 391; fire-tube, 21; fittings, 31; Lancashire, 25, _26_; locomotive, _20_, 23; multitubular, 21; principle of, 37; turbine, 74; turbine, Parsons, 79, _80_; volume of, as compared with.