. Scientific American Volume 70 Number 08 (February 1894) . ALLS for MACHINERYJOURNALS and BI-CYCLES a from Jg to 2 diam. in stockBalls of Any Material or Size madeto order. Accuracy of sphere, sizeand uniformity of strength guar-anteed. iy Write for Samplesand Prices. Also manufacturersof Automatic Screw Machines forSewing Machines, Bicycles, etc. Cleveland Machine Screw Co. 133 3d Ave., Cleveland, O. 8AS AND 8AS0LINE ENGINES. a TO 100 H, Noiseless, Simple, Economical,Durable. Guaranteed Lowest Gas Consumption. 16 ft. to Indicated, 17 ft. to actual b. p.
. Scientific American Volume 70 Number 08 (February 1894) . ALLS for MACHINERYJOURNALS and BI-CYCLES a from Jg to 2 diam. in stockBalls of Any Material or Size madeto order. Accuracy of sphere, sizeand uniformity of strength guar-anteed. iy Write for Samplesand Prices. Also manufacturersof Automatic Screw Machines forSewing Machines, Bicycles, etc. Cleveland Machine Screw Co. 133 3d Ave., Cleveland, O. 8AS AND 8AS0LINE ENGINES. a TO 100 H, Noiseless, Simple, Economical,Durable. Guaranteed Lowest Gas Consumption. 16 ft. to Indicated, 17 ft. to actual b. brake h. p. guaranteed. Works on any gas that will burn. For Electric IiiKhtingit is as accurately governed as any steam engine at samespeed. Sold on trial and under absolute to all power purposes. Vf Send for circular. WHITE a. MIDOLETON CA8 ENGINE CO.,729 to 735 E. Pratt Street, Baltimore, SCIENTIFIC AMERICAN SUPPLE-MENT. Any desired back number of the ScientificAmerican Supplement can be bad at this office for10 cents. Also to be bad of newsdealers in all parts ofthe country. ROPERS PRACTICAL HAND HOOKSFOR ENGINEERS AND FIREMEN. By STEPHEN KOPEB, ENGINEERS OWN BOOK. Containing an explanation of the Principle and Theo-ries on which the steam-engine as a prime mover isbased, and for the private instruction of youths whoshow an inclination for steam engineering. 106 illustra-tions. Price, post paid! Descriptive Catalogue mailed MEEKS, Publisher. 1312 Filbert Street, Philadelphia.
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