Inside Out Library
Scientific American, Vol. 62, No. 16 (1890) (1890)
leaf 4
ppreciated by plumb- the hands of the inanagers 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… … © 1890 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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