Boys' own book : a complete encyclopedia of athletic, scientific, outdoor, and indoor sports (1881)
Clarke, William, 1800-1838 · New York : J. Miller, Publisher · leaf 458
the morecommon form of this machiae. It con-sisted, he said, of a number of vanes,of thin sheet-iron, arranged in a circle,as here represented, but aU set oblique-ly at a proper angle of inclination. Itsaction was explained in the followingmanner: When a fire is kindled in thechimney, the air,…
Amusements · Games · Sports
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