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MUNN & COMPANY Editors and Proprietors. HOW CONTRACTS ARE AWARDED—GROSS FRAUDS IN THE PATENT OFFICE. INTELLECTUAL IMPROVEMENT., scientific american, 1869-02-20

A SPRING-SUPPORTED HANDLE BAR. BAR JOINTS. THE DENSMORE TYPEWRITER BALL BEARING TYPE BAR JOINTS. Carborundum Production and Use. Cigar Ribbons., scientific american, 1897-04-17

IMPROVED FEED WATER HEATER.IMPROVED FURNACE FEEDER. GREEN'S FEED WATER HEATER. N \\ Fig. 2. FRISBIE'S FURNACE FEEDER, scientific american, 1876-12-02

A GRAND WORLD'S FAIR IN NEW YORK. A Mexican Exhibition Australia to have a World's Fair. THE NOTION OF A WAGON WHEEL. THE PARIS INTERNATIONAL PATENT CONGRESS. PATENT RIGHTS AND WHO OPPOSE THEN. A STEAM JURYMAN. 4 Cleopatra's Needle. 440 04.

DECISIONS OF THE COURTS. United States Circuit CourtSouthern District of New York Improved Vapor Stove for Heating Soldering Irons. Improved Steam Boiler. Improved Awl. Improved Slide Valve. Improved Pruning Shears. Improved Boots and Shoes. PATENT

W, scientific american, 1898-12-31

scientific american, 1874-11-07

scientific american, 1865-02-11

Comparative Braking Tests Between Horse. Drawn Vehicles and Automobiles. 1441 .4 44 414444 41 44 44Automobile News. Legal Notes., scientific american, 1902-05-11

THE PERILS OF GUN COTTON. AMMONIA MOTIVE POWER FOR ORGANS. A DEFECT IN MARINE ENGINEERING. MR. HIGHTON AND THE NEW YORK TIMES., scientific american, 1871-09-23

scientific american, 1865-07-08

Zorreoponbence. How to Secure Trade with South American Countries. Moving a Telephone Switchboard. The Peary Relief Expedition. THE RAKE IN OPERATIVE AND INOPERATIVE POSITION. The International Automobile Cup Race., scientific american, 1900-06-23

gkdvaritottnentO. Inside Page each insertion- 75 cents a line. Back Page each insertion- 91.00 a line. BAIRD'ZigggATALOGUES Now Ready New Revised Editions. STEAM ENGINES FOR SALE. EFLINT FOR THE CAMPAION Bonit's Patent Reverse Motion Paneling Variety

scientific american, 1858-05-15

RECENTLY PATENTED INVENTIONS. Entrineering. Electrical. Bicycles Etc. Agricultural. REAPING MACHINE. - Mihail AleNall Miscellaneous. Ziusiness au a ^Dersortal. RINTS TO CORRESPONDENTS. INDEX OF INVENTIONS For which Letters Patent of the United States

nPatent, scientific american, 1908-10-24

The Iona naval magazine. Scientific American, 1906-11-03

A SALVAGE DOCK FOR SUBMARINES. BY THE BERLIN CORRESPONDENT OF THE SCIENTIFIC AMERICAN. GESTION FOR AMERICAN MUNICIPALITIES. BY JACQUES BOYER. A Suspended Hallway for Berlin. BY DR. ALFRED GRADENWITZ. THE 'OBERELBE '—A GERMAN SALVAGE DOCK FOR

IF YOU OWN A ROOF USE ASBESTOS MFG. & ROOFING. CO. STEAM USERS WE MANUFACTURE MOULDED AND SPECIAL RUBBER GOODS OF EVERY DESCRIPTION AND RUBBER ARTICLE 10 YOUR SATISFACTION. NEW YORK BELTING & PACKING CO. LTD. NILW YORK. Rainbow Packing PEERLESS

PERPETUAL MOTION Gas Blast Furnaces GAS PRODUCERS AND PRESSURE BLOWERS. AMERICAN GAS FURNACE CO. 23 John Street New York N. Y. ROCK DRILLS AIR COMPRESSORS CRAND DRILL CO) STARRETT R.973 Athol DROP FORGING - SEND US MODLES TO FIGURE ON. BOSTON MASS.

scientific american, 1867-04-11

290 timor THE WREN GAS WORKS. Analysis of Petroleum. Columbia Water Works. Fruit Bread. The trtilizations of Slag. Pig. 1THE WREN GAS WORKS., scientific american, 1877-11-10

scientific american, 1872-06-22

A WEEKLY JOURNAL OF PRACTICAL INFORMATION. ART. SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES., scientific american, 1895-12-21

grooved to form a channel in which the dirt raised by the plow is carried up from the ditch by the belt to be discharged at the side through a spout located over the wheel at the top of the frame of the machine. The 7 neJPOTTER'S TILE DITCHER.

M. PASTEUR'S AMERICAN PATIENTS. Jenner and Pasteur. Molecular Weight of Liquid Water. Subscribe now for one or both M. PASTEUR'S TREATMENT FOR HYDROPHOBIA., scientific american, 1885-12-19

thentifitSteam Boilers and Furnaces. Razor Paper. Recent Patented Improvements. 1.1, scientific american, 1858-07-24

ice power compound 71500 pounds ; working simple 82000 pounds. :1:.06446A-vA 1 '-. THE ST. LOUIS EXPOSITION., scientific american, 1904-09-17

ENGINES BOILERS MACHINERY order LeCOUNT'S PATENT Machinists' Tools. 0 Tenoning Machines Rand de Scroll Lathes dr Machinery for Furniture Car Wheel dr Agricultural Shops. CHLORIDE OF CALCIUM. Da3rtcon. THE ONLY PUMP IN THE MARKET DESIGNED AND

TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United State. were Granted . March 28 1893. AND EACH BEARING THAT DATE. MOOS Toy elastic O. Carpenter, scientific american, 1893-04-08

Start of 90-Horse-Power Renault Driven by M. Bernin. Frank Croker in 75-Horse-Power Simplex. Wreck of Arents' 60-Horse-Power Mercedes. 24-Horse-Power Packard Driven by C. Schmidt. Clement Taking One of the Sharp Turns. THE VANDERBILT INTERNATIONAL

NEW YORK: IMPORTANT PATENT DECISION DECARBON I ZER INCREASES POWER 20 PER CENT Sample quttrt can. 81.50. General Accumulator & Battery C GOERZ BINOCULAR 'PAGOR' C. P. GOERZ AMERICAN OPTICAL CO. 52 Union Square E. New York AVOID MICROBES Drinking Cups

INGERSOLL BOILER HOUSE AND ENGINE ROOM. The Hammond Type Writer. A Remarkable Steamer. INGERSOLL DRILLS AT A HEADING., scientific american, 1887-06-04

THE HOADLEY-KNIGHT COMPRESSED AIR MOTOR. AUTOMOBILE CARRIAGE DRIVEN BY COMPRESSED AIR MOTOR COMPOUND COMPRESSED AIR MOTOR TRUCK AS USED ON STREE T RAILWAYS. EXPERIMENTAL COMPRESSED AIR AUTO-TRUCK FOR YARD., scientific american, 1899-02-04

A Snake Poison Remedy. The Sun's Rays and the Black Race. The Death of Prof. Neils RFinsen. Garnet for A brasive Purposes. . Charley's $20000 Prize., scientific american, 1904-10-08

HARRISON SAFETY BOILER DISASTROUS EXPLOSION Practically Tested HARRISON BOILER WORKS Weston's Patent Differential PULLEY BLOCKS 75000 IN USE. GUTTA PERCHA & RUBBER M1PG CO. VENEERS HARDWOOD BOARDS LUBRICATORS. Swain Turbine. THE SWAIN TURBINE CO.

scientific american, 1855-09-01

LITTLE WONDER 1904 Models 500 Second -Hand Wheels PERFORATED METALS The Hytrophant J. S. F. HUDDLES TON 2.0 Devonshire St. Heston NIAGARA FALLS ACETYLENE GAS PATENTS Trade Marks Designs Experience Scientific American Branch Office 051' Bt. Washington

RECENT AMERICAN PATENTS. Manufacturing Items., scientific american, 1865-07-08

PARIS EXHIBITIONTHE ITALIAN FACADE CHAMP DE MARS. Silkworm Breeding. BY PROFESSOR CHAS. V. BMW. WOODS LAP RING. Hardy Catalpa Trees., scientific american, 1878-08-24

FOREIGN PATENTS THEIR COST REDUCED. Proposals for Steel for Use in the Construction ot' the United States Armored Battle ship MORON ROUTE SHAKER THEOLOCY. TAKE THE BETWEEN PUBLICATIONS FOR 1888. J.0 1.11.I Ser II IN V. p.eash byPsees PAT. 2100.1

IMPROVED CAR COUPLING. IMPROVED FILTER. THE MULTIFOLD FILTER RECENT INVENTIONS. VUNK'S CAR COUPLING. I i, scientific american, 1882-01-07

Ashes as a Manure Coal 8 Asphaltum Mining 29 Astronomy 2 26. 5 145 285 336 Astronomical 362 Astronomical Science 268 Auctions Mock 381 Auger Clark's 13 Engs.) 64 Auger Handle Thayer's (Eng.) 220 Axle Box 4 Bags Paper 832 Baking Machine Bread 52 332

Read's Oil Can. STEAM TOWAGE ON CANALS. Core Retainer for Tubular Rock Drills. Fruit Dryer. The Behavior of Cements and Metals in Conjunction. BARTHOLOMEW'S SELF-ADJUSTING SUSPENDER., scientific american, 1872-01-06

MERICAN, scientific american, 1903-06-13

Ncientific American. 27 PRINCESS TOPAZE. Wire Wound Guns Adopted in the British Service. Primitive Man. How to Walk Upstairs. directed to that subject.', scientific american, 1896-01-11

LECTURE DELIVERED AT THE STEVENS INSTITUTE OF TECHNOLOGY BY WE HENRY GOODYEAR ESQ. OF NEW YORK. Trombes. THE DI CESNOLA COLLECTION. New York Academy of Sciences. Improved Zinc White., scientific american, 1876-05-20

TO OUR READERS. American.” RATES OF ADVERTISING., scientific american, 1864-05-28

TESTING BAYONETS AND CAVALRY SWORDS. 2 TESTING BAYONETS AND CAVALRY SWORDS AT THE ROYAL MALL ARKS FACTORI ENFIELD. IMPROVED SCREW CUTTING AND AUTOMATIC SLIDING GAP LATHE., scientific american, 1886-03-20

THE SCIENTIFIC AMERICAN. 95, 1860-02-04

TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement Scientific American Export Edition. Contents. THE SCIENTIFIC AMERICAN SUPPLEMENT No. 13E1 For the Week ending; August 24 1878. EDISON AND THE UNSEEN UNIVERSE IMPROVEMENTS NEEDED IN

The Soap Mines of California. Prizes for Temperance Investigations. Painting Glass for the Magic Lantern. CAR BOX GRINDER. THE TANITE COMPANY'S DENSMORE'S SAW-GUMMING MACHINE., scientific american, 1876-07-22

DR. SCOTT'S ELECTRIC HAIR BRUSH. A MARVELLOUS SUCCESS a rapid growth of hair on bald heads where the glands and follicles are not totally destroyed. 'I would Not take $1000 for my Brush A BEAUTIFUL BRUSH FeFtsTPASs. MONEY RETURNED IF NOT AS

DEFECTIVE ASSIGNMENTS OF PATENTS AND ROYALTIES. market and made by an old established house. The INTRODUCING AMERICAN METHODS IN ENGLAND. MANUFACTURE OF CELLULOID BEADS. SCIENCE NOTES. ice., scientific american, 1901-07-20

DESIGNS. TRADE MARKS. 9.0vertisemente. ELECTRICITY BELLS BATTERIES PUSHES WIRE MOTORS ELECTRICAL SUPPLIES STANLEY & PATTERSON 45000 SOLD. SMITH'S J. H. SMITH POWER HAMMER. I LIGHTNING WELL-SINKING \tv MACNINERY MANUFACTURERS. Aurora St. Chicag Me

HINTS TO CORRESPONDENTS. no attention will be paid thereto. This is for our information and not for publication. answered in re w his turn. tised in our columns will be furnished with the same. without remuneration. had at the office. Price 10 cents

FOR ALL PURPOSES. SON 2S Rodney Street Brooklyn N. Y. YOU CAN MAKE 5100.AWEEK ! NATIONAL SPECIAL 84 Dearborn St.B HIChicago. III 310 First Premiums PANAIER BROS. MIANUS CON N. Wanted tical machine for making empty gela tin capsules. Send

ESTABLISHED 1845 MUNN 86 CO. EDITORS AND PROPRIETORS. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement (Established 1876) Building Edition of Scientific American. (Established 1SS5.) (Established 1878) Contents. Scientific

Baltimore Md. ROCK DRILLS Not affected by gases. IN STORM OR CALM YOU CAN RELY UPON THE Pancoast Ventilator & Chimney Cowl STATIONARY ALL SIZES AND STYLES. 'The Scientific American Building Edition' PUBLISHED MONTHLY. SUBSCRIPTIONS $2.50 a YEAR.

CIR Asine. MUNN Ar. CO. Patents are Granted for Seventeen Years DO YOU WANT GAS WIRE ROPE. 37 Park row New York.' GTFA Handsome Bound Volume containing 150 gkdvtrtiottututs. WATER wHEEL8, scientific american, 1868-08-05

[ $3.00 A YEAR. WEEKLY., scientific american, 1900-08-18

Oakum a Substitute for Lint in Wounds. Agricultural State Fairs for 1862., scientific american, 1862-09-06

Week Ending September 4 1886. PAGE THE WATER SUPPLY OF NEW YORK CITY. SCORING OF GRINDSTONES., scientific american, 1886-09-04

A DAY'S ICE YACHTING ON THE HUDSON. NEW YORK ACADEMY OF SCIENCES. American Fire Arms for the Turks. Fruit Trees. A New Anvesthetic. Inventions Patented in England by Americans., scientific american, 1877-03-10

EXTRAORDINARY INSECT ENLARGEMENTS. Terminal Problems in New York., scientific american, 1907-05-25

SOMETHING NEW IN WOOD-WORKING MACHINERY. The Deterioration of Paper. A New Way of Preserving Meat., scientific american, 1898-07-09

The Current Supplement. Torrespoudence. PLANKTON., scientific american, -1909-08-21

Vol. XXV.--No. 23., scientific american, 1871-12-02

ENGINEENING INVENTIONS. AGRICULTURAL INVENTIONS. MISCELLANEOUS INVENTIONS. APRIL NUMBER. 1:46, scientific american, 1887-04-11

THE MILITARY BICYCLE. Japanese Lacquer. The Divining Rod. Fig. 1FRENCH MILITARY VELOCIPEDISTS. Fig. 2USE OF VELOCIPEDES IN THE ENGLISH ARMY. Fig. 3DRILL OF ENGLISH MILITARY BICYCLISTS., scientific american, 1889-11-30

scientific american, 06-03-17

THE PORTER-ALLEN High Speed Steam Engine. Mill Stones and Corn Mills. ERICSSON'S DELAIVIATER IRON WORKS COLD PENS. Boiler Feeder THE J. L. MOTT IRON WORKS Jarvis Furnace Co. MACHINISTS' TOOLS. TO INVENTORS AND MANUFACTURERS Wig. A. HARRIS Geo. W.

STEEL TYPE FOR TYPEWRITERS ESTA BLISHED 1846. Only $3.00 a Year Including Postage. Weekly-52 Numbers a Year. MUNN t‘ CO. 361 Broadway New York. 0 361 Broadway New York ROCK DRILLS AIR COMPRESSORS&JI OIL WELL SUPPLY CO. SETS OF CAS:EIN GS OF MODEL

SCIENTIFIC AMERICAN SUPPLEMENT of the country.-3 illustrations 17124 THE PRIZE ESSAY COMPETITION. THE PARIS EXPOSITION OF 1900. A Singular Node of Incubation. Experiment with Rotary notion., 1896-07-11

PATENTEES READ THIS., scientific american, 1861-10-26

The Incandescent Lamp as a Test for Stability. LOWER BOW PARR BANFF. Manufacture of Kid Gloves. CANADIAN PACIFIC RAILWAY—LOWER BOW PARK BANFF. Action of Superheated Steam on Clay., scientific american, 1892-01-30

Scientific American OCTOBER 21 1905. BOULEVARD CHICAG Branch Offices in New York Boston Pitts= burg Cleveland Denver and San Francisc 20th CENTURY SOAP SOAP. HAS NO EQUAL FOR AUTOMOBILES. The Duplex Comptometer GRAHAM'S Vacuum Cap-Appliance Co To

Unfastens Oricot' We Guarantee to Reduce Fuel Consumption 319 Washington St. Buffal N. Y. INVESTIGATE THE POULTRY BUSINESS Profitable Combinations of Egg Broiler and Roaster Farms CHAS. A. CYPHERS, scientific american, 1906-03-03

Illustrated Madan Machinery Crane Bros. Mfg. Co. CHICAGO. BABBITT ANI at . ri highest percentage ever, scientific american, 1874-10-10

MISCELLANEOUS SUMMARY. Pa.:, scientific american, 65-09-09

369 Notes on New Discoveries and New Appli7 cations of Science. DR. VOGEL'S RESEARCHES ON THE CHEMICAL ACTION OF LIGHT. absorption by the sensitizing substance of the iodine which the light separates from the sensitized iodide. carbon to combine with

100-Horse power. Centrifugal Pumps 100 to 100000 Gallons per Minute Best Pumps in the World pass Mud Sand Gravel Coal Grain etc. with out injury. HARTFORD CAPITAL000000 HOME OFFICE in Hartford. Conn AMERICAN GRAPHITE CO.„ MINES AND WORKS

Animal Electricity. Wooden Railroads. ASBESTOS A MATERIAL FOR GLASS MAKING., scientific american, 1867-12-14

increase with the velocity ? city. At two nautical miles per hour the thrust necessary to overcome the friction varies as the 1.823 power of the velocity; and at eight nautical miles per hour the thrust necessary to overcome the fric hardly proper

tends to arrange iteelf at right angles to an electric cur -G. A. M. HINTS TO CORRESPONDENTS. INDEX OF INVENTIONS Letters Patent of the United States were Granted in the Week Ending September1877 AND EACH BEARING THAT DATE. Zdnittiot tufo. EATON COLE

IMPROVED SHAFT COUPLING. IMPROVED AUTOMATIC SIGNAL BUOY. GUSS' SHAFT COUPLING CDURTENAYS AUTOMATIC SIGNAL BUOY., scientific american, 1876-07-08

loom and. the belt continuing t, scientific american, 1872-11-16

TO INVENTORS. INDEX OF INVENTIONS For which Lettere Patent of the United States were Granted February 10 1891 AND EACH BEARING THAT DATE., scientific american, 1891-02-21

OCTOBER 25 1873. NO. $7 PARK ROW NEW YORK. Contents. TECHNICAL RESEARCH AND EDUCATION. the object to which the researches of each were directed President Morton's investigations into the beautiful phe nomena of ' fluorescence' and also his brilliant

OBSERVATIONS ON THE GOLD FIELDS OF VENEZUE LA AND GEOLOGY OF THE STATE OF GUAYANA READ BB Food Estimated In Horse-powers. S. LIFTED 1 FT. HIGH FOOT-POUNDS. LUNAR ASSISTANCE. --LBS. LIFTED 1 FT. HIGH- KIND OF LABOR. AN'T OF WORK AUTHORITY.,

Classified Advertisements BUSINESS OPPORTUNITIES. SALE AND EXCHANGE. HELP WANTED. FACTORY AND MILL SUPPLIES. TYPEWRITERS. PHOTOGRAPHY. PATENTS FOR SALE. WATER FILTER. MOTION PICTURES. EXPERIMENTAL ELECTRICS. EYE-GLASS SPECIALTIES. SEASICKNESS.

Vol. LXIX No. 27. 123.00 A YEAR. WEER LT. THE BONTA PLATE GLASS ANNEALING OVEN. 4, scientific american, 1893-12-30

Porcelain and Opalescent Glass. A Singular Quality in Steel. cans. EXTENSION NOTICES., scientific american, 1866-11-10

A NATURALIST IN LA PLATA., scientific american, 1892-11-19

IMPROVED FORMS OP THE BUOGY-TTPE AUTOMOBILE. success that at. great conduetiv Power plant of the International motor buggy. SONE TYPICAL MOTOR-BUGGY POWER PLANTS., scientific american, -1909-03-20

CIENTIFIC MERICAN Vol. CNo. 26. THE METROPOLITAN TOWER AND THE 'ZEPPELIN II 'lSee Page 478.1, scientific american, -1909-06-26

166. Price 10 cents. for maintenance. 4. Less cost tor daily supply by the use of Holly's Improved Pumping Machinery. 5. Af reduces insurance risks and premiums. 7. Dispenses with fire engines in whole or in part. 8. Reduces fire department eenses.

419., scientific american, 1869-10-09

NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending MARCH 13 1900. AND EACH BEARING THAT DATE BARNES' NEW FRICTION DISK DRILL FOR FINE WORK Buy Telephones NEW BINOCULAR. HOWTO MAKE AN

Manufactory Established 1761. WILLIAMS S'stt SOLD EVERYWHEREElY MAIL ZS GIDDINGS IC STEVENS Rockford Ill. SAVE YOUR FUEL a es FOR FINE ACCURATE WORK SENECA FALLS MFG. CO. 695 Water Street Seneca Falls N.Y. U. S. A. NICKEL Electro-Plating Daus' 'Tip

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