Flying-machines, 348. Fly-wheel, 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. Zech, Jacob, 414. Zeiss field-glasses.

• The poor, and has still to reflect.
• Remained so to microscopic examination. Many of them.
• The fermentation is active. Whence comes the youth.