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Scientific American, Vol. 27, No. 11 (1872) (1872)

leaf 15

An illustration from Scientific American, Vol. 27, No. 11 (1872), 1872, leaf 15
{SEPTEMBER 14, 1872. … Patentees and Manufacturers ot oundries, etc. Also, improved Sheathing Felt and VALUE OF MINES AND QUARRIES. TEST CORES fhe sact that this Snaitmg oss 7% per cent grester EMERY WHEELS & EMERY BLOCKS, general Hociing. o aterials. Descriptive Circular. Som- strength, a finer finish, and is truer to…

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