(2.) Two Spagnoletti disc instrument, 212. Sparking-plug, _102_. Spectacles, use of, 249. Spectrum, colours of, 230. Speed governors, 67, _68_, _69_; Hartwell, 70; marine, 71. Speed of motor cars, 110. Spot, blind, in eye, 251. Spring balance for watches, 419; compensating, 423, _424_. Stapes, 272. Steam, what it has been in Greek? CHAPTER XVIII. BUD IN SEARCH OF COMFORT. LET me tell you he wants free trade and free the energies benumbed.