LATHE CHUCKS--HORTON'S PATENT
from 4 to 36 inches. Also for car wheels. Address
E. HORTON & SON, Windsor Locks, Conn.
* * * * *
SILICATE OF SODA, IN ITS VARIOUS forms, manufactured as a specialty,
by Philadelphia Quartz Co., 783 South 2d st. Philadelphia, Pa.
* * * * *
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