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SCIENCE IN TOYS. POLYPRISM. VIEWED IN MIRROR. CONCAVE CYLINDRICAL MIRROR CAUSTICS. SPHERICAL MIRROR. third book is laid horizontally on the ends of thestand CONCAVE MIRROR. WATER BULB MAGNIFIER. THE PRISM., scientific american, 1887-02-05

We answer—Ite.08ta less than $30Q Ii Years. Send for illuatrated ow .this notice. for Catalogue. F. LUNKENHELMER Prop. E. HORTON & SON. Windsor Locks Conn. OF THE, scientific american, 1873-03-29

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. LIV.--No. 8. 1 . [NEW SERUM J THE HOBOKEN INCLINED CABLE RAILWAY. [$3.20 per Annum. THE HOBOKEN INCLINED CABLE RAILWAY., scientific american,

Artificial Vanillin and Vanilla Flavors. The Scientific American in Colorado. The Current Supplement Contents., 1898-09-11

[OFFICIAL. Index of Inventions For which Letters Patent of the United States were granted BEARING TEAT DATE. 5CEEDITLIS OF PATENT FEES:, scientific american, 1872-11-09

Mass.:, scientific american, 1866-06-11

Patent Foot Power Machinery Complete Outfits. Seneca Falls Mfg. Co. SEBASTIANMAY&CO'S :LATHE PRIMARY BATTERIES INCANDESCENT LAMPS 8.120 Park Ave Brooklyn N.Y. POP SAFETY VALVE WATER RELIEF VALVE IMPROVED STEAM GAGE STEAM ENGINE INDICATOR 'ELECTRIC'

scientific american, 1881-01-11

The Kromsehroder Gas. 1.1NEW TURKISH BATH. Heating Power of Different Fuels. 620 EN ROUTE TO THE GREAT EXPOSITIONLETTER FROM UNITED STATES COMMISSIONER PROFESSOR R. H. THURSTON., scientific american, 1873-07-26

THE NEW YORK AND LONG ISLAND BRIDGE NEW YORK CITY. We present in this issue an illustration of the great steel cantilever bridge by which the Long Island Rail road Company expects in due course to run its trains into New York City and thereby add to

A WEEKLY JOURNAL OF PRACTICAL INFORMATION IN ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Improved Awnings. The Western Reserve. ARMSTRONG'S AWNINGS. How Peat is Obtained., scientific american, 64-10-15

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE„ MECHANICS CHEMISTRY AND MA NUFACTURES. Vol. XXX V.-No 1.1 1$3.20 per Annum. A SINGULAR COLLISION. THE GALLAHUE ROTARY ENGINE. Selenium Experiments. A REMARKABLE RAILWAY ACCIDENT., scientific

DR. LE PLONGEON'S LATEST AND MOST IMPORTANT DISCOVERIES AMONG THE RUINED CITIES OF YUCATAN. Oxalic Acid. An Enormous Puff Ball. Plate ISCULPTURED STONE WORK Plate 2HOW THE EXCAVATIONS WERE MADE., scientific american, 1884-05-10

Wind Pressure. The German Toy-industry—Its History and Development. Luminous Sugar., scientific american, 1898-12-17

Communications Received. TO INVENTORS. INDEX OF INVENTIONS For which Letter. Patent of the United States were Granted DESIGNS. TRADE MARKS. AND Study Electricity at Home NOINEERING IEPARTMENT VANDERBILT Bursar Engineering School of the Western

THIRTY-THIRD YEAR. Weekly. MUNN & CO. 37 Park Row New York., scientific american, 1878-06-11

Improved Horse Rake. BUCKMAN'S HORSE RAKE. ROYER'S COMPENSATING SPRING BALANCE. Machine for Xining Coal., scientific american, 1862-01-04

pyrites is an example of sulphurous and combustible mine Yellow Fever.Flour Mixed with Mineral Substances. American Institute Exhibition: The Effect of Great Pressure upon Powdered Substances. lgrallum a New Metal. The International Dairy Fair.,

Vol. LII No. 251 THE FASTEST RIVER STEAMER BEATEN BY A STEAM YACHT. THE STEAM YACHT STILETTO., scientific american, 1885-06-20

New Catalogue of Valuable Papers Inside Page each insertion75 cents a line. Back Page each insertion SIM a line. SEBASTIAN MAYCO'S INDEX OF INVENTIONS For which Letters Patent of the United State' were Granted AND EACH BEARING THAT DATE. ARTESIAN

SCIENTIFIC AMERICAN ESTABLISHED 1845 MUNN & CO. Editors and Proprietors Published Weekly at TERMS TO SUBSCRIBERS THE SCIENTIFIC AMERICAN PUBLICATIONS. RAILROAD BUILDING IN 1902. NEW SHIPS FOR THE NAVY. RECONSTRUCTION OF THE ERIE CANAL. THE COAL

AN EFFICIENT CALCULATING MACHINE. The Bulrush Caterpillar. In a Ferryboat Pilot House. Accidents with Explosives., scientific american, 1894-08-04

A CLOCK WITH A SINGLE WHEEL. THE EXPLORATIONS OF THE GERMAN ORIENT SOCIETY. A CLOCK WITH NO GEAR WHEELS. THE EXPLORATIONS OF THE GERMAN ORIENT SOCIETY., scientific american, 1908-04-25

DESIGNS. TRADE MARKS. LABELS. 'WOLVERINE' Gas and Gasoline Engines J WALWORTH MFC. CO. WIRELESS TELEGRAPHY.- SCIEN TRIJSCOTT MARINE MOTORS. FOR MECHANICS. The L. S. Starrett Co. Athol Mass. U. S. A. TO Prevention Better Than Cure. INDUCTION Gas

NEW PUBLICATIONS., scientific american, 1869-04-11

Toughened Glass. THE HORNED TRAGOPAN. THE NEW TURKISH IRONCLAD PAYKI SHEREEF., scientific american, 1878-02-23

YOUNG MAN LEARN SPANISH SCREW-CUTTING DIE HEADSHAWKINS NEW CATECHISM OF ELECTRICITY the typewriter Excbange The Berkefeld House Filter. Manufactory Established 1781. Manufactory Established 1781. DRAWING PENCILS COPYING 121 West Houston Street New

scientific american, 56-06-21

TO CORRESPONDENTS. Premium Tract. Union Magazine. CLARE SELLECK SQUIRE SELLECE. Fraud Washingthn Shielded Spring Diaper Pins. A Twelve Horse Steam Engine and Lo cometive Holler for one half their cost. chine. To Cotton Manufacturers. Patent Agency.

Fires from Steam Pipes. Protect the Boilers and Steam Pipes. AN IMPROVED CENTERING APPARATUS. Action of Products of Combustion upon Steam Jets. One Million Dollar Telescope. HOWARD'S CENTERING APPARATUS., scientific american, 1888-11-17

PALESTINE AS A ROUTE FOR A NEW SHIP CANAL. THE CHINESE JUNK. JOHN R. CORYELL. The Louisville Exposition. Sparrows as Food. The Jarvis Furnace in the Sandwich Islands. Topographical Uses of the Balloon., scientific american, 1883-08-25

RECENTLY PATENTED INVENTIONS. Engineering. Agricultural. Designs. NEW BOOKS ETC. 'Zusiness arta ^Dersonat., scientific american, 1897-11-11

IOW TO MAKE A MERCURY THERMOMETER Bar of Frame., scientific american, 1905-02-25

RETROSPECT OF THE YEAR 1901. BREAD-MAKING BY MACHINERY. (gorresponbence. A Universal Language Again., scientific american, 1902-01-04

Improvement in TurbinedWater Wheels. Improvement in Table Cutlery. Acid Phosphate 01 Lime. Natural Aniline. WAIT'S IMPROVED JON VAL TURBINE. CAUGHY'S EXTENSIBLE TABLE KNIFE., scientific american, 1868-04-04

Kidd's Cave. BY H. C. HOVEY. Subsidy to Pasteur. Headache. THE BRUSH STORAGE BATTERY., scientific american, 1882-12-30

MARCH 24 1894 1 THE TACHOCYCLE. HINTS ON COLORING LANTERN SLIDES. BY GEO. H. HOPKINS. LANTERN SLIDE COLORING., scientific american, 1894-03-24

Contents. No. 003 For the Week ending November 22 1879. TERMS FOR TUE SCIENTIFIC AMERICAN. The Scientific American Supplement Scientific American Export Edition., 1879-11-22

scientific american, 1894-12-11

BRICK MACHINES. PRESSES Front Brick Ornamental Brick Red Brick Fire Brick Artificial Fuel Building Blocks Wm. L. Gregg 100 U. S. POSTALS FREE! IMITATION STAINED GLASS. THE BARER BLOWER. The best in the World for Charcoal Blast Furnaces. WILBRAHAM

OCTOBER 19 1901. ERFORATED METAL OF EVERY DESCRIPTION AND FOR ALL. USES. 'All about the Telephone' Steel Dump Cars %WING STICK PROSPECTIVE BOAT BUYERS. A.B.SEE ELECTRIC ELEVATORS COUNTRY HOMES $2.000 AND UPWARD COMPLETE FLOOR PLANS Scientific

Glass moulds apparatus for operating. W. H Jones 499015 'Ziusrsinees ant' 'WertsonaL. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted AND EACH BEARING THAT DATE. Bicycle attachment T. Cummins 491040 r York. Other

scientific american, 1884-06-11

THE NUMBER OF STARS IN OUR UNIVERSE. The Fastest Boat in the World. Phosphorescent Photography. To test this I exposed a tablet in the sunlight until Lecture on the Pneumatic Dynamite Gun. Asbestos Paper. 40p. 271., scientific american, 1887-04-23

CAPT. CODY'S BRITISH ARMY AERO PLANE. Aviation Abroad. RECENTLY PATENTED INVENTIONS. Pertaining to Apparel. Electrical Devices. Of Interest to Farmers. Of General Interest. Hardware. Heating and Lighting. Household Utilities. Machines and Mechanical

Hydraulic dumping153 392 Hydraulic joint cut-off Jarre's Hydraulic pile driving, scientific american, 1884-12-06

A dvantages of Electric Ila!lways. A Vessel Wrecked by a Water Spout. quick Telegraphy. Electrical Light Patents. IMPROVED WAGON SPRING. IMPROVED AIR PUMP. The Lady Franklin Bay Colony. Drilling Half a Year. I Discovery of an Aztec Calendar Stone.,

WRITE FOR THIS BOOK ON THIS FULL 18-20-Horse Power AUTO-RUNABOUT THE SCHACHT MANUFACTURING COMPANY Every Room Warm I WILL MAKE YOU PROSPEROUS NATIONAL CO-OPERATIVE REALTY CO. A Clean Shave In case with barbers' genuine Horse Hide Strop $2.00 ALL THE

RAYMOND'S RATCKET DRILL. Improved Ratchet Drill., scientific american, 64-09-24

scientific american, 1865-01-02

Sewing Manbina.--Jobn Batabalder Boston Mass. Pat ented May 8 1848: boned and sulphate of linre mixed with silloious matter. Money Received Specifications and drawings and models belonging t TO OUR READERS. Back Numbers and Volumes of the Scientific

THE DISTILLATION OF COAL. A Short History of Petroleum. Minute Forms of Life. I Wages in England. The Treatment of Cancer by Pressure., scientific american, 1878-08-10

Patent Dish-washing Machine. FOR 1864! BRISTOL'S DISH-WASHING MACHINE. Club Rates., scientific american, 1864-03-19

W. F. & JOHN BARNES CO. Ruby Street Rockford III. Rausarrr Surmises Servs GRIFFIN MILL The Only Perfect fractory Substances. THE SHELBY STEEL TUBE CO. Box 15 SHELBY OHIO. Durable—Easily Applied. This roofing is manufactured from natural Trinidad

Two Wonderful War Ships. Railway Schools in Russia. THE AMERICAN YACHT VIGILANT. The Chocolate Tree in Trinidad. THE YACHTS CONTENDING FOR THE INTERNATIONAL CHABIEIOrSHIP., scientific american, 1893-10-14

Irrigating Arid Lands in the West. 4 The Belgian Firearms Industry. PHOTOGRAPHIC NOTES. 12 B. Banger of Poisoned Fish., scientific american, 1891-07-25

for Loose Pulleys in use. VAN DUZEN'S PATENT LOOSE PULLEYOILER. SAVE MONEY. Before '21' BICYCLE ILI THE 1300KWAIaTER CASTING CO. APPARATUS MATERIAL NEWARKN.J. 92 LIBERTY ST. N.Y. HARRISON CONVEYOR ICE and REFRIGERATING MACHINES STEEL WEITMYER PATENT

AN IMPROVED CAR AXLE BOX. GALLAGHER'S CAR AXLE BOX. AN IMPROVED STEAM FIRE ENGINE. Electrical Muscle Malting. 4 AN IMPROVED SUr:tlARINE BOAT. FREESE & GAWN'S SUBMARINE BOAT. AN IMPROVED STEAM FIRE ENGINE., scientific american, 1894-08-25

scientific american, 1868-05-09

McKEESPORT PA. U. S. A. MILD STEEL AND BEST WROUGHT IRON TUBULAR GOODS IN THE WORLD; control the Manufacture of Wrought Tubular Goods Made of a High Class of Mild Steel FROM THE ORE to the FINISHED PRODUCT and unqualifiedly recommend NATIONAL PIPE

Improved Music and Book Stand. The Value of Mathematics., scientific american, 1870-01-08

Profit Sharing by a Coal Company. A New Antidote to Cholera. The Cube Root—Easy Method for its Extraction. Quenching of Fires on St' anwhips. Success of Vaccination in Germany.Work of Amateur Electricians., scientific american, 1890-09-27

scientific american, 1855-07-14

BY THE ENGLP.II CORRESPONDENT OF THE SCIENTIFIC AMERICAN. TUE ROBIN AUTOMATIC INCANDESCENT MANTLE-MAKING MACHINE; CAPACITY 4500 MANTLES, 1904-10-01

The Green Frog of Australia. Dime ultiles of Ice. The Electric Telegraph. Lead in Painting. Free Translations., scientific american, 1848-03-25

BAILEY'S TESTING APPARATUS. KINNEY'S HYDRO-PNEUMATIC ACCUMULATOR. CEMENT RESERVOIR DIACRAM MONDAY 6 261 TUESDAY 6FRIDAY SATURDAY IMPROVED TESTING INDICATING AND RECORDING APPARATUS., scientific american, 1878-03-02

Express Atlantic Steamers. The Coming Bleach. 141. A Remarkable Discovery of Natural Coal Tar. Florida Oranges in England., scientific american, 1881-05-11

Freaks of the Tornado. Another Explanation of the Stone Ball's Motion. First Arithmetic Published in the United States.Wisdom of the Amalgamation or the Line and Engineer Corps of the Navy. Engineering Notes., scientific american, 1905-05-27

PATENTS TO FOREIGNERSGOVERNMENT PURCHASE OF PATENTS. THE MAXIMUM OF SUN SPOTS., scientific american, 1884-05-10

THE WALLACE-PARKER ELECTRIC LIGHT EXCAVATOR ON THE GHENT AND TERIPEU ZEN SHIP CANAL BELGIUM. THE WALLACE-PARXER ELECTRIC LAMP. EXCAVATOR ON THE GHENT AND TERNEUZEN SHIP CANAL BELGIUM., scientific american, 1879-01-25

MISCELLANEOUS INVENTIONS. The Calamity at Szegedin.The Polariscope Adopted for Testing Sugar. Collecting Postage Stamps. A Novel Bird Box. The Giant Snapping Turtle. AUSTRALIAN INSECTS IN CALIFORNIA. The Texan Cattle Drive for 1879., scientific

they have become loosened by use is a much-needed article. The best cement for this purpose consists of one pound of col ophony (purchasable at the druggists') and eight ounces of and the cavity of the handle is then to be filled with this mix ture.

165 W. Ed St. Cincinnati 0 ARTESIAN PiereeWellExeavatorCo. New York. KNUDSON & ELLS WORTH Nan Duseics Pat. 1.00se Pulley Oiler Telegraph and Electrical SUPPLIES Satisfaction Guaranteed. Easton Pennsylvania. New Catalogue of Valuable Papers TO

Week Ending August 15 1891. The Atlantic Record again Lowered. Majestic. First day Second day Third day. Fourth day Fifth day Sixth day Total Strength of Various Kinds of Iron. Dimensions. Elastic Limit lb. per sq. in. lb. per sq. in. 2 2 19300 30600

IMPROVED ELECTRIC RAILWAY CONSTRUCTION. Submarine Blasting. 4A MACHINE FOR WASHING. DRYING AND SEPARATING COAL ORE ETC. Pleasure Barge for an Indian Prince. THE TWIN ELMS. A Curious Method to Take Foul Air Out of a Well. TWIN ELM TREES IOWA COUNTY

MUNN & CO. A VALUABLE WORK FOR INVENTORS PATENTEES AND MANUFACTURERS. Sur Zeaditung fur beutfte (rcinber., scientific american, 1865-02-25

INDEX OF INVENTIONS For which Letters Patent of the United States were Granted June 3 1884 AND EACH HEARING THAT DATE., scientific american, 1884-06-21

Philadelphia Pa. Over 12000000 square feet now in use. CERTIFICATE FROM T silE AMERI CAN INSTITUTE IN 1871 AS 75 William St. New York. - PORTLAND CEMENT SCHLENKER'S PATENT '1? BOLT CUTTER TO INVENTORS. The 'Consolidated Fruit Jar Company' JOHN A.

Comparative strength of the World's Navies in completed ships. Comparative size of the Russian and Japanese Navies in 1904 and 1905. England, France, Germany, United States, Italy, Austria. Scientific American, 1905-07-08

scientific american, 1901-10-19

A Wire Tramway in the Alps. Injurious Photographic Chemicals. Underground Conduits in New York City. RECENTLY PATENTED INVENTIONS. Engineering. Railway Appliances. Electrical. Mechanical. Agricultural. Miscellaneous., scientific american,

scientific american, 1903-03-07

Public Health Promoted! Agriculture Benefited! GOUX'S PATENT ABSORBENT CLOSET & URINAL. FOR SALE OFFICE 135 BROADWAY. DEAFENING BURR STONES BOLT CUTTER HOWARD IRON WORKS BUFFALO.N.Y. WIRE ROPE. Magnetic Motor C MACIAINERY Safes and lilechanical

AGRICULTURAL INVENTIONS. The Great Eastern. The Variability of Bricks. Restoring Solomon's Temple. American Gold Work and Jewelry. Sea-Weed Sea-Serpents., scientific american, 1881-11-26

tientifit 3nurican., scientific american, 1859-04-30

Communications Received. Inventions Patented in England by Americans. Index of Inventions For which Letters Patent of the United States were granted BEARING THAT DATE., scientific american, 1872-10-12

order to give the propeller its maximum effect. The proper velocity can be theoretically ascer tained and when this is excelled there is loss of effect. The velocity depends on the pitch and slip and can by them be proportioned t suit the engine. The

Making Artificial Ivory. The Fun of Running an Engine. ZSCHIESCHE'S HYDRAULIC MOTOR. Ethylene. BartholdPs Statue of Liberty. DESIGN FOR A PARLOR ORGAN., scientific american, 1884-05-24

POSITION OF THE PLANETS FOR SEPTEMBER. Gas for Locomotives. Lobsters in the Pacific. The Eggs of the Gnat. Evaporated Fruit., scientific american, 1888-09-01

The New York Tribune Building. SMITH'S IMPROVED WHIFFLETREE HOOK. -.p. Consumption of Wood in France. A CURIOUS OCULAR ILLUSION. or Pure Sulphate of Nickel. A Varnish from Vulcanized Rubber. STOCKLEY'S IMPROVED ANTI-PRIMER. An Excursion to the

FLOORS Do You Want Your New Building A Building Which Is Simply Non combustible Is Not Fire-proof Unprotected Steel and Iron Are Not Fire-proof Concrete Is Not Fire-proof NATIONAL FIRE PROOFING COP1PANY Contractors for Construction Fire-proof

scientific american, 1866-03-24

Improved Fence Post. Improved Pantaloons Block. Improved Horseshoeing Harness. Improved Railway Switch. Improved Spring Bed Bottom. Improved Sand and Gravel Separator. Improved Plant Protector. Improved Door Mat. Improved Blank for Corrugated Paper

qorresportbence. The Creeping of Belts. Filling Hot Stuff into Glass Jars or Bottles. Natural History Notes., scientific american, 1890-11-01

RECENTLY PATENTED INVENTIONS. Electrical Apparatus. Engineering Improvements. Mechanical Devices. Miscellaneous Inventions. NEW BOOKS ETC., scientific american, 1900-06-11

Why the Needle Points Northerly. NEW STYLE OF MOULDING. THE STEAM ENGINE INDICATOR. CROSBY'S STEAM ENGINE INDICATOR. I 41. Novel Use for Empty Cans. Patent Office Items. BENJAMIN'S IMPROVED MOULDING., scientific american, 1880-06-12

MARCH 2 1901.Are the New Armored Cruisers up to the Modern Standard of Efficiency ? Automobile News., scientific american, 1901-03-02

SCIENCE SETTLES A GREAT PROBLEM Zassiness ana 'Personal. NEW BOOKS ETC. THE ROOF FRAMER; OR THE SCIENCE OF in roof framing. It is fully illustrated with engravings diagrams scales etc. With the aid of these diagrams and instructions which latter are

COMPANY Editors and Proprietors. Ear NEW YORK SATURDAY OCT. 27 1866. Contents; A SYSTEM OF GAGES FOR IRON WORK. CHILLED SHOT AND THE SHOEBURYNESS EX PERIMENTS. SOUTH AMERICAN BEEF IN ENGLAND THE SIMPSON PROCESS., scientific american, 1866-10-27

Inside Page each insertion75 cents a line. Back Page each insertion- 61.00 a line. SEBASTIAN MAY & CO's Improve Cutting LASSES Foot & Power SHEET METAL 00013. teed. DR. SCOTT 8.43 Broadway N.Y. Rue's Little Giant Injector. .PENNSYLVANIA DIAMOND DRILL

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