LATHE CHUCKS--HORTON'S PATENT

from 4 to 36 inches. Also for car wheels. Address

E. HORTON & SON, Windsor Locks, Conn.

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SILICATE OF SODA, IN ITS VARIOUS forms, manufactured as a specialty,

by Philadelphia Quartz Co., 783 South 2d st. Philadelphia, Pa.

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Scientific American, Volume XXIV., No. 12, March 18, 1871 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. · 第 168 / 194 题