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Scientific American, Vol. 62, No. 16 (April 1890) (1890)
leaf 4
anagers of the ers at the first glance. It is a calked plug for soil American Museum of Natural His- pipes and other pipes, that can be quickly put in and tory, New York, the sum of $200, to quickly removed, without the necessity of chipping be paid in three prizes of $150, $30, out the packing… … back numbers sent them on signifying such wish. of the balsam- THE NONPAREIL PIPE PLUG. Their subscription will then expire with the year. © 1890 SCIENTIFIC AMERICAN, INC.Arc · Apparatus · Gas · Munn · Scientific American · Patents · Gravity cells · Express money · Horse power · American supplement · Sugar maple · Sewing machine · Electric light · Phonograph cylinder · Small pulley
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