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GEO. V. CRESSON Ca, NaJn Office a.nd Works, AUegbeny Ave, west of Seventeenth St.^ Philadelphia^ Pa« New York Office : J4J Liberty St. Engineers^ Founders^ and Machinists* Manufacturers of POWER TRANSMITTINQ MACHINERY, CRUSHING ROLLS and JAW CRUSHERS. Builders of SPECIAL MACHINERY TO ORDER. 14 ESTABLISHED 1828 tuBBE:R Goods FOR RAILWAYS, STEAMSHIPS, MILLS, MINES, SMELTERS, & ALL MECHANICAL PURPOSES. Belting* Hose, Packings, Rubber Covered Rollers, etc., of Superior Quality Manufactnred by f The Trade Mark of Ezcelleooe. James Bennett Forsyth, Gen. Vgr. ^inal Mfrs. Bostoni New York, Bufalo. Chicago, ulcanized 256-260 100-102 90 lOr )ber Goods. Devonshire St. Reade St. Pearl St. Madison St. JEWELL BELTING COMPANY BXCLUSIVB MANUPACTURBI^ OP aCI BELTING OPPICB AND PACTORY HARTKORD, CONN. BRANCHES: New York Memphis Chicago Philadelphia Cincinnati San IG AGBNT8 IN PRIKCIPAL CmK8, 15 Morse Twist Drill & Machine Co. New Bedford, Mass., U. S. A. MAKERS OF Arbors Mandrels Center Keys Metal Slitting Saws Chucks Mills COUNTERBORES Reamers Countersinks Screw Plates Cutters Sleeves Dies Sockets Drills Taps Gauges Taper Pins Lathe Centers Threading Tool Machines Wrenches UNIFORM QUALITY VONDERFUL DURABILITY QUICK CUTTINQ WATERPROOF NO DUST; NO ODOR Norton Grinding Wheels are made of Alundum, the hardest and sharpest Abrasive. Universal Tool & Cutter Grinders QRINDINQ MACHINERY, OIL STONES, AND EVERYTHING FOR GRINDING WRITE FOR CATALOGS NORTON COMPANY WORCESTER 16 CHICAGO WM. SELLERS &. CO. (INCORPORATED), PHILADELPHIA, U. S. A. HIGH-SPEED TRAVELING AND SWING-CRANES. INJECTORS FOR ALL CONDITIONS OF SERVICE. GRINDING -MACHINES FOR TOOLS AND DRILLS. IMPROVED HYDRAULIC TESTING-MACHINES. - Umler Patents of A, H. Emery. TURNTABLES FOR LOCOMOTIVES AND SHOP- CARS. IMPROVED LABOR-SAVING MACHINE TOOLS For Railway and Machine-shop Equipment. SliAFTING IN ALL ITS DETAILS FOR THE ECO- NOMICAL TRANSMISSION OF POWER. 4RVIN Milling Machines, Profilers, Screw Machines, Monitor Lathes, TappingMachbies, ' Gang Drill Presses, Cutter Grinders, Hand Lathot Ib>.3AUiiit*rMl Milling MighiM. ■*""•" «•».«. NEW DESIGNS. NEW IMPROVEMENTS. WriU/tr C«ialo[U,, THE GARVIN MACHINE CO.. spring and Varlck Streets, New York City. Agenit in all rriifipnl CUIbi. THE LODGE & SHIPLEY MACHINE TOOL CO. Engine and Turret Lathes. 14 inch to 4S inch 5wins. CONE PULLEY PATENT HEAD MOTOR DRIVE. ALL OUR WIRES NAFL BOARD OF FRE UNDERWRITERS STANDARD. NEW YORK INSULATED WIRE CO* Main Office: 114 Liberty street, n. Y. lraNlm:CNKA60.l92DwfthliiesSt.: BOSTON. 7 Otis St; SAN FRANCISGO. 33 SmmI 8L WELDLESS STEEL WIRE CHAIN. 7WW£ THE STRENGTH OF WELDED. TRIUMPH PATTERN. 14 sizes. Send for results of voluntary tests made by the British Scientific Society. THE BRIDGEPORT CHAIN CO., Bridgeport, Com. WE MAKE OVER TEN MILES PER DAY. RECENTLY ISSUED. THE STEAM-ENGINE and OTHER HBAT-M0T0R5. By W. H. P. CREIQHTON, U. S. N. (Retired), Professor of Mechanical Engineering ^ TuUme University of Louisiana. 8V0, ZU + 499 PtreS, 198 ftrOTM. ClOth, $S«00« M&ln Office t BENNETT BUILDING, NEW YORK. CHICAGO, PHILADELPHIA, BOSTON, ATLANTA, CLEVELAND, ST. LOUIS, DETROIT, PITTSBURG, KANSAS. ESTABLISHED 1896. HENRY MAURER A. SON, MANUFACTURERS OF RBEBP,TILE!i,liLIIB!i,6iOLHUjlljllill, Clay Retorts for Qas Works. Office. 420 East 23d Street, Warkt, Miiirar, N. J. MFW YORI^ .P. 0., T.lBjriph, mid R. R. StitioK.) IN C. W I VjniV. ATLAS PORTLAN D CEMENT Is the Standard American Brand. Used by all tiie leading Enj^eers and Contractors throughout the United States, and preferred by the U. 5. Qovemmenti ATUS PORTUND CEMENT CO.. 10 BROAD STREETt NEW YORK. fef^liS^i^^^T^lii^^ REINFORCED CONCRETE CONSTRUCTION using a special corrugated ttont attached to buildings in the ordinary way and plastered with Portland cement^ making a lights strongs fire-proof construction for roois^ walls^ floors^ etc* THE BROWN HOISTING MACHINERY CO., Engineers, Designers, and Builders of Hoisting Machinery of Every Description, Main Office and Works, CLEVELAND, OHIO. Branch Offices, NEW YORK and PITTSBURG 20 I DOMESTIC WATER-SUPPLY WllhoDt DependlniaotbBWtnd. THE IMPROVED RIDt^R AND IMPROVED ERICSSON HOT*AIR PUMPING- ENOINES !■ HM tor tw*nt)r>f(ve ymmi^. More than 20,000 soU. 3pecin«l b) tbe Ludloe Engt ncM-s of this country. I CatalostM on apptlutlon to ma) RIDER-ERICSSON ENGINE CO., JUST PUBLISHED. DENATURED OR INDUSTRIAL ALCOHOL. A Treatise on the History, Manufacture, Composition,' Uses, and Possibilities of Indu.strial Alcohol in the various Countries permitting its use, and the Laws and Regulations governing the same, including the United Stales, with concise tables, methods, and notes for the use of the Engineer, Chemist, Manufacturers of Alcohol and Alcohol Making and Using Apparatus, including Alcohol Motors, Engines, Illuminating Lamps, and Heating and Cooking Stoves. By RUFUS FROST HERRICK, CouuKinK Cfacralst and Chemical Gnttneer. BvD, iz -\ 513 pkges, 163 flguiea. Cloth, $4.00 net. Published by JOHN WILEV & SONS. <OMETERS TECHNICAL PURPOSES. jurial Pyrometer, for suck Temper. to looo" K. allJC Pyrometer, for Oveo Tea>iMr< elier Pyrometer, for Fumace Tem- dJT«cI reading scale to 3000° F. EN &, CO., Inc. 1010 Chestnut Street, )RK. PfllLADEUPHIA. EL & ESSER CO., EET, ... NEW YORK. 813 Loauc Slrect. 40 Oak St., cor. MaHcat. Our Paragon DrawiliK Insdumenls enjay an excellent and wide reputalion. Thev are of the variety We also have Key, Arrow anS Mbei , We rarry th!J*rarjesl and most complele b>. BortmeDt o( Drawing Papera, Tracing Cloths and )rinl and Btownprint Papers. eat variety of engine-divided slide rules and call r Patented Adjustmeni, which inauies permanent, lide. Some of our other well-linoun calculating in- ilng Machine, Faller'sSlide Role. Thacber'sCakula- 1 Pocket Calculator. Goodchild Matheioaiical Chart le) catalogue on request. iHGINECRlNa LIBRARY. 