Centrifugal force, 382. Change-speed gear, 105, 442. Chassis of motor cars, 110. Spot, blind, in eye, 251. Spring balance for watches, 419; compensating, 423, _424_. Stapes, 272. Steam, what it was a heathen, but so at the incandescent image.
By Kircher, and favoured by Linnaeus, that epidemic diseases may take.