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Scientific American, Vol. 60, No. 20 (1889) (1889)
leaf 14
MAIL. © yult descriptive circular freo te Paintors,J.J. CALLOW,Cleveland.€ cold air per hour, when running at a speed of 100 revolu- dress The Scientific American (weekly), one year ws $3.00 MUNN & CO., Publist NN ee airdadwas’ Now York. tions per minute, and capable of reducing the tempera- ture…Internet Archive · Public domain (published before 1931). Free to use for anything.
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