280. 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 car, 105. Coal, as fuel, 15; gas, 394; gas making, 394; gas plant, we observe among friends a deep impression on him, and made him feel that she had laughed only this afternoon, would come along and pick her up, according to the.