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Scientific American, Vol. 64, No. 21 (May 1891) (1891)

leaf 3

An illustration from Scientific American, Vol. 64, No. 21 (May 1891), 1891, leaf 3
the bellows. The helmet fits tightly over the head, guage, while only 500,000,000 will be speaking other at its rear. The spark arrester is divided by a curved having a visor with glazed sights very much like an European tongues. English is thus indisputably the partition into two chambers, the… … which prevents the moisture from evaporating freely. HADLOCK'S SPARK ARRESTER ©1891 SCIENTIFIC AMERICAN, INC.

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