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THE CITY OF PITTSBURGH AND ITS INDUSTRIES. NEW RAILWAY TUNNEL UNDER THE HUDSON HP7ER BETWEEN NEW YORK AND JERSEY CITY. The Economy of Powdered Fuel. New Telegraph Relay., scientific american, 1874-12-12

TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted MARCH 9 1897 AND EACH BEARING THAT DATE., scientific american, 1897-03-27

AN HYDRAULIC PLACER ELEVATOR. Dedication of the Germanic Musepm at Harvard. Panama and Its Cotnmerce. many France Italy and the United States but gives HYDRAULIC ELEVATORS FOR HOISTING PLACER TAILINGS. BY DENNIS H. STOVALL. The American Motorman of

Secure A Woman's Hand in Marriage and you range for her future welfare: LIFE INSURANCE in The Prudential [IS THE BEST MEDIUM. SALE AND EXCHANGE. MACHINERY FOR SALE. PATENTS FOR SALE. PARTNERS WANTED. OPENINGS. ENGINEERING WANTS. HOTELS AND RESORTS.

Improved Registering Machine. Improved Rotary Hair Brush. Improved Log Turner. Improved Graining Roller. Improved Harrow. Improved Motive Power. Improved Windmil.: Improved Safety Attachment for Pocket Books. Improved Wall Paper Exhibitor. Improved

The Jungfrau Electric Railroad. HIGH TEMPERATURES. Fig. 1 —NEW PYROMETER. Fig. 2NEW PYROMETER. Report of the International Hydrographic Congress. Preserve Your Papers. The Current Supplement. Contents. N. 7. 4.7 Yachts factor of safety in !,

RECENTLY PATENTED INVENTIONS. Agricultural Implements. Electrical Apparatus. Hardware. Mechanical Devices. Railway Improvements. Vehicles and Their Accessories. the invention and date Of this paper. Business and Personal Wants. sary to give the

RECENTLY PATENTED INVENTIONS. Pertaining to Apparel. Electrical Devices. Of Interest to Farmers. Hardware. Household Utilities. Machines and Meatanical Devices., scientific american, -1909-09-04

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. THE NEW WAR SHIPS TEXAS AND OREGON., scientific american, 1895-01-19

You Need a Typewriter tribune Bicycle Tested and True. ORDINARY RATES. Inside Page each insertion - 75 cents a line Back Page each insertion.$1.00 a line THE NEW MODELS Remington Standard Typewriter THE DARA1LEL cl+BESIXaca rfLturdPIALEttinctl

TRIAL OF THE PNEUMATIC CRUISER VESUVIUS. THE RAPIEFF PROJECTILE FOR PNEUMATIC GUNS. THE UNITED STATES TORPEDO CRUISER VESUVIUS., scientific american, 1893-02-11

IRIDIUM: Not attacked by acids or alkalies; not oxidized S. E. Corner Pearl and Plum Sts Cincinnati Ohi Leffel Water Wheels Prices Greatly Reduced. GOL IPPEN%. The CALLI-CRAPHIC Pen. NIABIE TODD & BARD 180 BROADWAY NEW YORK. OLD ROLLED SHAFTING. THE

Mr. Wm. A. Crowell of Lime Rock Litch cure a patent for a new water wheel which others in use. This improvement is in the construction of the buckets. Discovery of a New Metal. and has given it the name of donarium after the Teutonic god Donar the

Contentt4 : TOO MUCH GAS; NOT ENOUGH LIGHT. AN EXACT METHOD OF DETERMINING THE EVAPORATIVE EFFICIENCY OF STEAMBOILERS., scientific american, 1871-12-02

MARCH 15 18791 Chemistry at Columbia College New York. Fall of a Meteor in Michigan. SOME NEW POINTS IN THE DIAGNOSIS AND PROGNOSIS OF TYPHOID FEVER. Weekly Pay Days. California Honey., scientific american, 79-03-15

The Value of the Scientific .Vincrican. One Hundred and Fifty Thousand., scientific american, 1874-01-10

Brass and Its Uses. Origin and Development of Steam Navigation. The Salmon Disease. A Balloon Crosses the Channel. Photographic Positives Produced Directly on Paper. Decrease of Immigration., scientific american, 1883-08-04

A Belt Carries Fire through a Binh American Clays and Their Use for Constructive Purposes. A Child Woman. The Telephone Nut Shell., scientific american, 1886-05-22

TO OUR SCIENTIFIC AMERICAN SUPPLEMENT THE NEW YORK ELECTRICAL EXHIBITION. Record from Honolulu Broken. THE AMERICAN ISLANDS. 0 0 NEW TRANSATLANTIC RECORDS., 1898-05-14

MADDER VE GETABLE AND CHEMICAL. THE STAR SHOWER OF AUGUST 10. PROPERTIES OF SATURATED STEAM. AlSCIENTIFIC AND PRACTICAL INFORMATION, scientific american, 1873-08-09

Vol. LXXXVNo. 13.], scientific american, 1901-09-28

366 Improved Plow. PIERPONT'S PLOW. T INVENTORS MECHANICS AGRICULTURALISTS PROSPECTUS Improved Fountain Pen. Concrete Buildings. WRITYR'S FOUNTAIN PEN., scientific american, 1865-06-03

After seeing a copy you Will Want all the back numbers. 1 9 ii HAIGHT'S UMBRELLA STAND., scientific american, 1889-08-17

PUBLISHERS' CARD. THE GREAT INTERNATIONAL EXPOSITION. THE WATER GAS DELUSION AGAIN. NO. 37 PARK ROW NEW YORK. TERRIS. Club Rates., scientific american, 1875-12-04

Pertaining to Apparel. Electrical Devices. broken. Of Interest to Farmers. Of General Interest. Hardware. Heating and Lighting. Household Utilities. Machines and Mechanical Devices., scientific american, 1908-12-12

Waterproof Matches., scientific american, 1908-10-10

Whitening Positives. Project for for Increasing the Water Power of Pennsylvania. -sr THE PHONOGRAPH AND ITS INVENTOR NR. THOMAS A. EDISON., scientific american, 1878-07-06

BARNES HOT BLAST WATER JACKET FURNACES COPPER ORES. MATTE from SULPHIDES AT ONE OPERATION. UNION IRON WORKS Those Who Have THE EUREKA CLIP m OL FOR MECHANICS. Microscope for Projection. QUEEN 6c CO. 1010 Chestnut St. Philadelphia Pa. NEW IMPROVED,

EASY' Racycle sprockets turn between bearings. Bicycle sprockets turn outside bearings. Life Insurance Free from All Features. There are some Eye Openers in .gccident Insurance Policies Just placed on the market by The Travelers Insurance Company

THE CALIFORNIA MIDWINTER FAIR. The New Trannandine Telegraph Linea. Dirt In Milk. THE CALIFORNIA MIDWINTER FAIR—THE FINE ARTS BUILDING. THE CALIFORNIA MIDWINTER FAIR—THE ADMINISTRATION BUILDING., scientific american, 1894-04-14

Wood Pavements. SCHOENTHALER'S PACKING BOX FOR BOTTLES PACKING BOX -60 fr FOR BOTTLES. Renewal of Brain Cells. The Cost of Making Steel Rails. Ivy Lawns. Sulphite of Soda Intensifier. Fires from Belting., scientific american, 1884-11-15

METAMORPHOSES OF THE ATTACUS LUNA., scientific american, 1871-04-01

THE UNITED STATES MILITARY ACADEMY. BY COL. CHARLES W. LARNED U.S.M.A. STATUE OF COLONEL THAYER CADET BARRACKS FROM THE NORTHWEST., scientific american, 1900-06-23

Inexpensive Classified Advertisements SALE AND EXCHANGE. BUSINESS OPPORTUNITIES. HELP WANTED. POSITION WANTED. PARTNERS WANTED. PATENTS FOR SALE. To Book Buyers It Is Good Business Policy Gaining Success by Deserving It An Unbroken Line of Successes

cientific Amtrica THE ADVOCATE OF INDUSTRY AND JOURNAL OF SCIENTIFIC MECHANICAL AND OTHER IMPROVEMENTS. By Munn & Company. TERMS$2 a year—$1 in advance and the remainder in 6 months. TILE SONS OF TOIL. Strange Customs. Napoleon's Cenotaph. Fat

Catered at the Post Office of Now York. N. Y as Second Class Matter. Cupyright. 1.901 by Munn & Co.' $3.00 A YEAR. Vol. LXXXVNo. 2.5.], scientific american, 1901-12-21, giant sand wheel

GRAIN CRUSHER AND DISINTEGRATOR. The Radiating Power of Metals. Railway Embankment Gardens. SELF-OILING LOOSE PULLEY. Fun in a Horse. DOOR AND GATE LATCH. WORKUTH'S DOOR AND GATE LATCH. The Channel Tunnel JONES' GRAIN CRUSHER AND DISINTEGRATOR.,

RECENTLY PATENTED INVENTIONS. RECENTLY PATENTED INVENTIONS., scientific american, 1882-11-18

THE HARLEM RIVER IMPROVEMENT AND SHIP CANAL. Rapid Method for Dental Gold Plates. earresponbence. Diminutive Electro-magnets. Danger from Unclean Instruments. MAP OF ROCK CUTTING ON HARLEM SHIP CANAL., scientific american, 1890-03-22

Regeneration of Limbs. Pulmonary Consumption. Borax. Vital Mechanism. Musical Sounds. Guinea Pigs. Electric Cautery in Surgery. Fatal Flybites. Rapidity of Muscular Contractions. Transplantation of Trees and Shrubs. Phosphorus in Medicine. Life and

scientific american, 1904-03-26

Testing Machine for Building Stone. ar Sugar from Melons as Compared with Sugar from Beets. In-growing Toe Nails. On the Air in. Workshops. A New Chinese Composition., scientific american, 1871-01-28

RECENTLY PATENTED INVENTIONS. Electrical Devices. Of Interest to Farmers. Of General Interest. Heating and FAighting. Household Utilities. Machines and Mechanical Devices., scientific american, 1905-05-20

MA.N °FACTO NIN IA41200 AND RAILROAD LI ERB, scientific american, 1868-10-28

4 THE FIRST ATLANTIC CABLE STATION IN AMERICA. APPROACH TO THE NEW EAST RIVER BRIDGE. Three More Airships for the St. Louis Contest. The British Antarctic Expedition., scientific american, 1903-07-18

Velocity of Projectiles. American Competition. Zinc in Drinking Water. Chiccory with Coffee., scientific american, 1885-05-02

IMPROVED SAD IRON. CASTAGNETO'S IMPROVED SAD IRON. HILL MARKING ATTACHMENT FOR CORN PLANTERS. SHUPE'S HILL MARKING ATTACHMENT FOR CORN PLANTERS. AN IMPROMPTU HEN COOP. AN IMPROMPTU HEN COOP. India Calling for Our Inventions. Curious Request.,

TO INVENTORS., scientific american, 1879-04-11

Glad to Hear It. Concerning the Pittsburgh Student. The Bessemer Steel., scientific american, 1861-11-16

FAIR OF THE AMERICAN INSTITUTE. ELECTRICITY IN MEDICINE. SCIENTIFIC INTELLIGENCE., scientific american, 1871-10-28

NO. 87 PARK ROW NEW YORK. 0. D. MUNN. A. E. BEACIL TERMS FOR THE SCIENTIFIC AMERICAN. Club Rates. Scientific American Supplement. TERMS. Con tents. THE SCIENTIFIC AMERICAN SUPPLEMENT. For the Week endingSeptember 2 1878. TABLE OF CONTENTS. The

NEW INVENTIONS. HEATING TIRES BY GAS JETS. 4 Artesian Wells. Ignorance Regarding Machinery.To Remove Nitrate of Silver Stains APPARATUS FOR HEATING TIRES., scientific american, 1880-01-31

CHUCKS with over 40 new illustrations FOR COLD HANDS. EUREKA HAND WARMER. GEAR AND RACK CUTTING. Frost Self-Regulating Steam Pump. UNION MFG. CO. 17 Rose Street Battle Creek Mich. Steam! Steam! NICKEL ODELL TYPEWRITER CO. Pontiac Bldg. Chicago. PURE

THE WAR. Warlike Operations at New-Orleans. How our Matters Strike an English Manufacturer., scientific american, 1861-08-31

THE NEW TEMPLE EHANUEL. VENTILATION., scientific american, 1868-09-30

Sewing and Cooking. Burning and Unburning. Dr. Seyferth's Process for the Purification of Sirups and Molasses in the ManutUcture of Sugar. Preservation of Iron from Oxidization., scientific american, 1871-02-04

326 (MAY 22 1875.Recovery of Salt Soils. Curious Magnet. TOMPKINS' YARN SPOOLER. Utilization of Power. The Use of the Mosquito. IMPROVED SKEIN SETTING MACHINE, scientific american, 1875-05-22

THE WELLMAN POLAR AIRSHIP EXPEDITION., scientific american, 1907-06-22

The Maehinist's Shibboleth. QUIRK. The Curability of Galloping Consumption. .0 '1PHOTOGRAPHIC NOTES. Stokers on the Fast Ships. Laziness a Foe to Originality., scientific american, 1891-01-03

Munn & 37 Tart Dim View-Sart., scientific american, 66-09-08

NEW BOOKS AND PUBLICATIONS. TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted January 27 1891 AND EACH BEARING THAT DATE., scientific american, 1891-02-07

Notice to Our Readers. Some Odd Inventions. work general well-being and the spirit of initiative.' THE VEGETATION OF LOWER CALIFORNIA. vails is ligneous parenchyma that is to say a tissue the large proportion of saponine that it contains. In,

Established 1770. Harrison Safety Boiler. 25000 HORSE POWER IN USE. HARRISON BOILER WORKS Philadelphia Pa 75000 IN USE. Or JOHN A. COLEMAN Agent Burglars at Work. Costiveness Headache Digestion. 265 BROADWAY. Spoke Works. JAMES W. QUEEN & CO. 924

THEEUREKA CLIP ARTESIAN REVISED and ENLARGED EDITION Of Receipts Price 85.00 in Cloth. $6.00 in Sheep. $6.50 in Half Morocco. Poet Free. 900 New Formulas. 1901 APPENDIX. TWENTY-THIRD EDITION EXPERIMENTAL SCIENCE. ard Work on SENECA FALLS MFO. CO. 695

SPRINGS THEIR POWER AND USES. PROTOPLASM. SKINNING AND STUFFING BIRDS. WHY DON'T BOYS LEARN TRADES 1—MECHANICAL LABOR., scientific american, 1869-04-24

Smoky Chimneys. To Kindle a Quick Fire. ss.sms Tin-Lined Pipe Versus Lead Pipe. Asphalte Pavement. Longevity in Plan and the Lower Animals. Distillation Temperature of tlteLlOily Products of Coal. THE MECHANICS' FAIR AT CINCINNATI OHIO., scientific

Monitors. 'ARKANSAS' CLASS—THE MONITOR 'ARKANSAS.' HARBOR-DEFENSE MONITOR 'ARKANSAS., scientific american, 1901-12-14

E. K. writes : I wish to employ a (3) J. L. B. asks : 1. Can cast iron be (4) J. F.-The sample arrow head you (6) H. S.-The plant which you send to (7) 8 A. S. asks (1) how to clean nickel (8) T. K. asks (1) if the tide flows up (9) W.W. C. sends an

MUNN & CO. Editors and Proprietors. No. 361 BROADWAY NEW YORK. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement Contents. SCIENTIFIC AMERICAN SUPPLEMENT No. 4300 For the Week Ending June 18 1888. Water Gas in Massachusetts.

RECENTLY PATENTED INVENTIONS. Pertaining to Apparel. Electrical Devices. Of Interest to Farmers. Of General Interest. Hardware. Heating and Lighting. Household Utilities. Machines and Mechanical Devices., scientific american, 1907-11-16

The Floreneie Orthopter or Flapping-Wing Machine. The Motor of Santos-Duniont's Aeroplane. Santos-Ounwili's Aeroplane. The Inventor is Seated on Top of the Basket Just Ahead of the Motor. RECENT AEROPLANES AND AIRSHIPS IN FRANCE. tr . ., scientific

TO OUR RE &TIERS. Back numbers and Volumes of the 'Scientific American.' Seasoning Lumber. Castor Oil as a Lubricator. A Question. of Pressure. 1865-09-16

CORRESPONDENCE SCHOOL. THE KODAK WAY Kodak Developing Machines . . $15.00 to $10.00 REM OH DIAMONDS NO ACENTS WANTED. RiM0H JEWELRY COMPANY 34 OLIVE STREET ST. LOUIS MO. THE E. P. BLAKE CO. MATCH MACHINERY. Experimental & Model Work THE SCHWERDTLE.

scientific american, 1895-05-04

THE EXPLORATION OF THE UPPER AIR BY MEANS OF BALLONS SONDES. An Assmann ballon sonde ready for ascension. Mr. Clayton holding balloon and basket. Basket containing instrument elevated by ballons sondes. Recording apparatus employed in the Blue Hill

Crabs of Cape Verde Island. S. Winding Up a Horse. Should City Horses be Turned Out to Pasture? Our Ferry Traps., scientific american, 79-09-13

ENGINEERING INVENTIONS. MECHANICAL INVENTIONS. AGRICULTURAL INVENTIONS. MISCELLANEOUS INVENTIONS. NEW BOOKS AND PUBLICATIONS., scientific american, 1884-11-22

scientific american, 1882-04-08, Gregg's new system of brick making

Destroyed., scientific american, 1866-01-07

ANEW', scientific american, 1867-11-02

OCTOBER 3 1896 How to Win Foreign Markets. THE BATH ROOM. Candles in China. THE SULPHUR FURNACE. THE DISINFECTING OVEN., scientific american, 1896-10-03

Eels that Scale Precipice OFFSET MECHANISM FOR SAWMILL CARRIAGES. A. Great Steel Plant. THE GARABIT VIADUCT. ROSENBERG'S OFFSET FOR SAWMILL CARRIAGES. wownr, scientific american, 1888-12-29

scientific american, 1859-08-27

complete $4.00. WARNER. MOTOR COMPANY Dept. 15 Flat Iron Bldg. NEW YORK CITY WE GUARANTEE The Original ' As heretofore made only by KLIP=KLIP PULVERIZING ALL HARD SUB STANCES. WE HANDLE ALL KINDS OF MATERIALS FROM COT ANY KIND Or A MACHINE COME TO

scientific american, 1898-02-19

NOVEMBER 1894.-(No. 109.) 'Zitissinessz cutb Wersonal. TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted November 6 1894 AND EACH BEARING THAT DATE., scientific american, 1894-11-17

scientific american, 1867-11-11

Vol. X.No. 26. Improved Beater Hay Press. A New Alloy. JAMES'S BEATER HAY PRESS. Split and Sawed Shingles., scientific american, 1864-06-25

IMPROVED FRICTION HOISTING ENGINES. New Ocean Steamer. The Mathematics of Light. Fig. 1MITNDY'S DOUBLE DRUM PORTABLE HOISTER.Industrial Prizes. PORTABLE HOISTING MACHINE. ''' .::, scientific american, 1877-06-02

Mechanical Properties of Soils. THE GOLDEN DOOR OF THE TRANSPORTATION BUILDING OF THE WORLD'S FAIR. GOLDEN 'DOOR—TRANSPORTATION BUILDING OF THE WORLD'S FAIR. II ql A New Material for Pathological Models. The Ideal Family Physician., scientific

10 CENTS A COPY $3.00 A YEAR, scientific american, 1907-01-05

MECHANICAL MASTERPIECES OF THE EIGHTEENTH CENTTJRY. Telegraphy Without Batteries. of Pierre Jaquet-Droz., scientific american, 1907-06-22

CLARK'S COMBINED BOILER BOLT AND FERRULE. Improved Extension Trestle. chine. Aerial Navigation. SUPPORTING PLATFORM. ANOTHER PETROLEUM DISASTER. DANGER OF TRANS PORTING CRUDE PETROLEUM. HAMMILL'S EXTENSION TRESTLE OR HORSE FOR, scientific american,

ADVEIRTISEMENTS. tizin Terms o f Adver g.AMATTEAWAN MACHINE WORKS.- w00D'S PATENT SHINGLE MA Important Notice to us I, scientific american, 1850-07-20

PUBLISHED WEEKLY AT No. 361 BROADWAY - NEW YORK. TERMS FOR THE SCIENTIFIC AMERICAN. (Established 1845.) One copy one year for the U. S. Canada or Mexic One copy six months for the U.S Canada or Mexic Remit by postal or express money order or by bank

Central Park Natural History Notes. Wonderful Scenes on Jupiter. port the hypothesis of the elevation of a large region Notes. separated., scientific american, 1889-11-09

ENGINEERING INVENTIONS. AGRICULTURAL INVENTION. MISCELLANEOUS INVENTIONS. SCIENTIFIC AMERICAN MAY NUMBER.-(No. 31.) TO INVENTORS. fZusineos anb 'APereancti. INDEX OF INVENTIONS For which Letters Patent of the United States were Granted May 8 1888 AND

The New Pile Driver. Chang and Eng. Remarkable Electrical Instruments. Saint. Samuel C. Bishop., scientific american, 1872-08-03

SCIENTIFIC AMERICAN ESTABLISHED 1845 Published Weekly at 40044 TIME FOR ANOTHER PRINCIPIA., 1905-07-15

scientific american, 1859-06-25

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