ntific American Supple- ment, No. ttSb'. Price 10 cents. To be had at this office and from all newsdealers. TO INVENTORS GAS & GASOLINE ENGINE NOW READY. GATES ROCK & ORE BREAKER OPERATED with COAL and OTHER MAN UFAC- km MANUFACTURERS Capacity up to 150 yards per hour. j^xperiniental Sscience,… … at this ottice and from all newsdealers. as the size of the drill or the nature nf the BY Geo. M. Hopkins. work may demand. BIRDSIIORO, PA., Builders of High Class floskins' Patent Hydro-Carbon Steam Engines, Diamond Drilling and General W. F. & JNO. BARNES CO., Machinery. Flour Mill Rolls Ground…
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