Wound, _173_; shunt wound, _173_; shunt wound, _173_; simple, 161, _162_. Ear, the, _271_, _273_; a good, 274, 307; sensitiveness of, 275. Eccentric, _52_, 53; setting of, 53. Sliders, 297. Sound, nature of, 270; 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; Messrs. Siebe, Gorman, and Co.; The Pelton Wheel Co.; Messrs. Holmes and Co.; The Micrometer Engineering Co.; Messrs. Negretti and Zambra; Messrs. Chubb; The Yale Lock Co.; The Pelton Wheel Co.; Messrs.