milliviN7R A NEW Copy For All. No. 135 Howard Ave. New Haven Conn. MACHINISTS' TOOLS. NEW HAVEN NIANUFAC'FURING CO. New Haven Conn. The HOADLEY PORTABLE STEAM ENGINE. THE BEST eMOST ECONOMICAL ENGINE MADE ROCK DRILLING MACHINES Mill Stones and Corn Mills. J. T. NOTE & SON Buffal N. Y. The Farm The Garden The Greenhouse BEACH. SON & C9. Box 1320. 7 Barclay St. NEW YORK CITY. CAMERON Steam Pumps Works Foot East 23c1 St. New York. PORTABLE QUARTZ MILL. 9 PA. PARALLEL Send for Price List t Sixth and Chestnut Sts. Philadelphia Pa. BOILER COVERINCS SAVE 10 TO 20 PER CENT. THF CHALMERS SPENCE CO


milliviN7R A NEW Copy For All. No. 135 Howard Ave. New Haven Conn. MACHINISTS' TOOLS. NEW HAVEN NIANUFAC'FURING CO. New Haven Conn. The HOADLEY PORTABLE STEAM ENGINE. THE BEST eMOST ECONOMICAL ENGINE MADE ROCK DRILLING MACHINES Mill Stones and Corn Mills. J. T. NOTE & SON Buffal N. Y. The Farm The Garden The Greenhouse BEACH. SON & C9. Box 1320. 7 Barclay St. NEW YORK CITY. CAMERON Steam Pumps Works Foot East 23c1 St. New York. PORTABLE QUARTZ MILL. 9 PA. PARALLEL Send for Price List t Sixth and Chestnut Sts. Philadelphia Pa. BOILER COVERINCS SAVE 10 TO 20 PER CENT. THF CHALMERS SPENCE CO. Foot East 9th St. New York. JOSEPH C. TODD Jarvis Gas Consuming Furnace. Steel Castings EVELINA STREET PHILADELPHIA PA. PORTLAND CEMENT. IMPORTANT FOR ALL CORPORATIONS AND Box 979 IllostonMass YALE VERTICAL MILL YALE IRON WORKS New Haven Conn. ROOTS' FORCE BLAST BLOWER. FIRST PREMIUM AWARDED AT PARIS AND VIENNA. SPEED ONLY 100 TO 250 REV. PER IL SAVES HALF THE POWER REQUIRED FOR FAN. TO ADVERTISERS! AYER & SON'S MANUAL ' I LIMITED PARIS EXPOSITION. PERFECT NUNN tit CO. TO INVENTORS AND MANUFACTURERS EMERY WHEELS AND GRINDERS. S7 Maiden Lane New York FAIL T M 174 ELM STREET CINCINNATI 0. PATENTS SOLD. 921 Chestnut St. Philadelphia. MACHINISTS' TOOLS NILES TOOL WORKS Hamilton Ohio. DEALERS IN TOOLS TO MAKERS FOR PRICES. . VI. WOUTITINGTON '239 BROADWAY. NEW YORK. THE THIRTY-THIRD YEAR. Only a Year including Postage. Weekly. 52 Numbers a Year. 37 Park Row New York., scientific american, 1878-04-06


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