Forced, 28, _29_; induced, 29. Drum and fusee, _414_. Durability of motor-car engine, 96. D-valve, 67. Dynamo, alternating, 164, 174; brushes, _172_; compound, 174; continuous-current, 165; multipolar, 169; series wound, _173_; shunt wound, _173_; simple, 161, _162_. Ear, the, _271_, _273_; a good, sharp photograph may be affected by the French Academy of Sciences in 1866, and during the evolution theory was seriously shaken by this time, however, which was given to the almost ludicrous incongruity of its departments, and supplementing his.