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Scientific American, Vol. 63, No. 11 (1890) (1890)
leaf 3
red a day’s work for all labor- and adapted to hold a small piece of sponge, the casing ers, workmen, and mechanics, now or being preferably a rubber net-work, and formed with hereafter to be employed by the gov- a neck adapted to be engaged by the end of. a pencil. ernment. The sponge is thus… … the nation and its in- INGLIS’ ARTIFICIAL HUDSON'S SLATE-SPONGE. © 1890 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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