far th e [to do as good work Barton Mfg. Co., 336 Broadway, N.Y. largest circulation of any scientific work in the See Sci. Am., Dec. 30, 1893. Send for world. $3 a year. Specimen copies sent free. circular to as any high priced Building Edition, monthly, $2.50 a year. Single machine. Special- THE… … WILLIAMS, 61 RAGE ST., BRISTOL, CONN. * * * VOLNEY W. MASON & CO. ARMSTRONG'S * PIPE * THREADING A series of twelve elegantly printed Maps of the FRICTION PDLLEYS, CLDTCBES, and ELEVATORS The prices of the different publications in the United Heavens, one for every month in thenar. Specially…
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