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ELECTRICAL ENGINEERS IN SOUTH AFRICA. wrecked by the Boers. Elaborate construction work A COMBINED MINER'S CANDLESTICK AND TOOL. COMBINED TOOL AND MINER'S CANDLESTICK. A Pneumatic Tube Service. Helen Keller Makes a Speech at Radcliffe College. The

WRITE FOR THIS BOOK ON THIS FULL 18-20-Horse Power THE INVINCIBLE THESCHACHT MANUFACTURING COMPANY DIE MODELS SPECIAL WORK TOOLS MACHINERY Model& Experimental Work Scientific American New York 1898-1908 Engineering Number Issued December 5 1908 Forms

WARBURTON'S ARMY HAT AND CAP. Improved Army Hat and Cap. MONIER'S GAS BURNER., scientific american, 1862-03-29

FEBRUARY 17 1894. THE COLUMBIAN EXPOSITION—COLONIAL RELICS. MILES STANDISH'S PIPE. Manganese Steel. Drainage of the Valley of Mexico. THE IEWFISH. Removing Evergreen Trees. PUTNAM'S TORCH. Enriching of Skim Milk. THE JEWFISH, scientific american,

CARTER'S PORTABLE ENGINE., scientific american, 1865-11-04

Business mul Personal Wants. sary to give the number of the inquiry. MUNN & CO. NEW BOOKS ETC. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending October 131903 AND EACH BEARING THAT DATE. t e s

THE TANITE C Ativertionnento. ASBESTOS FLAKE STEAM PIPE COVERINC. LIVE GAME WANTED MACHINISTS' TOOLS. NEW HAVEN DIANUFAC'FIIRING CO. New Haven Conn. MININI: MACHINERY. Engines BoilersPomps Holly's Improved Water Works. NEW TOOLS—LATHES AND SCROLL

Patent Pulley Bridle Bit. Improved Brick Kiln. BARNES' IMPROVED PULLEY BRIDLE BIT BREWER'S IMPROVED BRICK KILN, scientific american, 1872-05-18

Design tor a Vertical Boiler. Solar Spots. Loss of Life in Coupling Cars. -.64. Singular Ice Formation Cause of Typhoid Fever. . Effect of Steam Pipes on Wood Placed in Contact With Them. Anr. Who Get The Patent Office Reports? Curious Phenomenon in

Inventions Patented In England by Americans. APPLICATIONS FOR THE EXTENSION OF PATENTS., scientific american, 1870-08-20

The Materials of the Universe. On the Substitution of Sodium for Phosphorus in Lucifer Matches. as. Important Experiments with Heavy Guns. Patents., scientific american, 1869-06-05

End View of Main Traveler for Erecting the Bridge., scientific american, 1905-10-28

emswM1 THE ARTESIAN WELL AT SPRINGFIELD SOUTH DAKOTA. Storage Battery Road at Dubuque Iowa. Canadian Pacific Enterprise. -4 4 4 Stone Walling. Chloralamide. _4 4 The Nickel in Slot Library., scientific american, 1891-06-20

RESULTS OF THE HILL-CLIMBING CONTEST AT MOUNT WASHINGTON., scientific american, 1905-07-29

Vol. XXIV.- No. 20. $3 per Annum HANNAHS' PATENT METROPOLITAN RAILWAY, scientific american, 1871-05-13

AN IMPROVED' LOCOMOTIVE BOILER. ELASTIC ENGINE FOUNDATIONS AND SUSPENSION OF VEHICLES. ELASTIC SUSPENSION OF MACHINES.WEEKE'S SYSTEM OF BUILDING DIKES.S WEEKE'S SYSTEM OF BUILD ING DIKES., scientific american, 1889-02-16

govropontents. nee:weans. Maple Sugar. To th.e Editor of the Scientific American: There is a short article headed 'Maple Sugar' in your is sue of April 27 in which the writer gives an account of the process of the manufacture of that sweet compound.

APRIL 4 1896. THE ROBINSON CORN AND FEED MILL. A DYNABIOGRAPH. Transplanting Large Trees. l AN IMPROVED DUMB WAITER. LARSEN'S DUMB WAITER. construction which renders the car very strong. METHOD OF RECORDING FOOT PRESSURE AND CHANGES OF ELEVATION

scientific american, 1869-01-01

RECENTLY PATENTED INVENTIONS. Hardware. Machines and Mechanical Devices. Pertaining to Vehicles. Prime Movers and Their Accessories. Of General Interest. and Queries, scientific american, 1904-04-23

EXTENSION NOTICES. 41 NEW PUBLICATIONS. Inventions Patented in England by Americans., scientific american, 1867-06-29

CANADA. ENGLAND. FRANCE. BELGIUM. GERMANIC AND AUSTRIA. GENERAL REMARKS. Improved Horse Boot. Improved Wrench. Improved Corset. Improved Wagon Spring. Improved Magazine Fire Arm. Improved Tripod for Rock Drills. Improved Escapement for Watches.

A Literary Treasure House. Opening of the Harlem Speedway., scientific american, 1898-07-16

office from any one of our agencies or factorie STEAM LAUNCHES. BARNES' THE HARDEN STAR HAND GRENADE FIRE EXTINGUISHER Puts Out Fire Instantly. OPTICAL GOODS PRENTICE &SONMfgOpticians176.'wayNY. FINISHED PULLEYS AT 4 CTS. PER POUND TO CLOSE OUT STOCK

. Iron in Iowa 383 Iron ore in Math Carolina. 228 Iron oxide sep. from alumina 20 Iron patent for manufacture 153 Iron preserving new process 294 Iron spots to remove (6i 171 Ironwood tree the .135 Plates dry 363 Platinum crucible 201 Plethysmograph

Cabinet Organs. E N GI N S WIVE GA G EsMACkti, scientific american, 1872-01-01

miles an hour., scientific american, 05-09-09

The Wrongs of American inventors. The Tables of Regnault and Rankine. Comet A 1881. MECHANICAL INVENTIONS. Cost of Public ituildings. 61 Fireless Locomotives. Nitric Acid. Spontaneous Combustion by Nitric Acid., scientific american, 1881-06-25

Plans for the Dedication of the Columbian Fair October 1892. Electricity in Tooth Extraction. Ghost or Shadow Pictures in Photography and the Twin Brothers., scientific american, 1891-04-18

scientific american, 1902-10-11

The Modern Machines for Mechanics THE VV. W. OLIVER MFG. CO. 148a Niagara St. Buffal N.Y. ‘‘STANT:rAIRD' Two=Speed Automatic Coaster Brake Hub WEGUARANTEE Rochester Electric Motor Co. 062 HE THE NEW PIERCE/1INN N=IMININIIIMAINIIIIIIIIIIMEE1!.

DECEM BE R 17 1898. GUNS RECOVERED FROM THE SPANISH CRUISERS. a sip of water. IA 5?-4-INCH GUN FROM THE ' OQUENDO.' 2VIEW SHOWING BREECH AND MOUNTING OF A 5%-INCH GUN. SPANISH WRECKS AT SANTIAGO., scientific american, 1898-12-17

Hoisting' Stone in Quarries. Pyrometers. Prize Offered for a Machine to Separate Rheea or China Grass Fiber., scientific american, 1870-04-09

scientific american, 1865-12-16

THE HECKER AND WATERMAN EXPERIMENTS. Tobacco. The Oldest Iron Ship. The Explosion at Tripoli. A Tree hewn by Bullets. A Substitute for Brandy in cases of Exhaustion. Relative Sizes of Ultimate Atoms., scientific american, 64-07-16

Eight Hours a Day. True Explanation of the Ball and Jet. The Crackling of Roofs in Cold Nights., scientific american, 1865-10-28

THE SHOEBURYNESS EXPERIMENTS., scientific american, 1868-08-19

Issued from the United States Patent Office, scientific american, 1858-05-08

SEPTEMBER 23 1882. The Alligator Industry. Embalming. THE NATURAL REDDENING OF WATER., scientific american, 1882-09-23

MANUFACTURE OF GUN STEEL AND ARMOR PLATE. V ariety of, scientific american, 1903-12-12

Bramah's Planing Mashinery. Nitrate of Sliver and other Salts. Charcoal. New Method of Inlaying and Coating Me tals with various Substances. Wheat and Bran. Facts About Digestion. Mode of Preparing Tannate of Iron Tannate of Iron In the Treatment of

THE FIRST-CLASS BATTLESHIP ' MAINE.' SUCCESSFUL TEST OF 6k-INCH KRUPP PROCESS PLATE BY 8-INCH GUN. E. TEST OF A BETHLEHEM KRUPP-PROCESS ARMOR PLAT, scientific american, 1898-12-03

Results of an Experiment with the Villa Aeroplane. AUTOMATIC DEPRESSION RECORDER FOR THE SCIENTIFIC CONTROL OF MINE VENTILATION. Mb 4P AN AUTOMATIC DEPRESSION RECORDER FOR THE SCIENTIFIC CONTROL OF VENTILATION IN MINES. Government Printing of the

For the Scientific American. Enamels. Table of the Composition of Metallic Baths to Temper Edge Tools. To Sweeten Rancid Butter. MECHANICAL DIOYESIVINTS. Hydraulic Strew. The Pulley. Researches at Ninevah and Nintrood. Gaudin's Night Sun. Testing

SOME SPECIAL FEATURES OF THE GARDEN. PROTECTION FOR CHRISTMAS TREE CANDLES. A REAL LIVE WINTER SCENE UNDER THE TREE., scientific american, 1908-11-28

The New Salt Field of New York. Eclipses of the Sun., scientific american, 1883-03-03

TO OUR READERS. Back Numbers and Volumes of the Scientific American NUR N 8; C New York °Its g, 1863-03-21

ROCK BORING STEAM ENGINES. Dredging Machinery. Flint Mill Machinery Tur bine Water Wheels.0PENNSYLVANIA DIAMOND DRILL CO. PIPE COVERINGS Made entirely of ASBESTOS. Absolutely Fire Proof. BRAIDED PACKING BILL BOARD SHEATHING CEMENT FIBRE AND

Syeareand beautiful gold plate chain and charm sent watch write to-day THE NATIONAL MFC. & IMPORTING CO. SANITARY SOAP VASE PREVEN 'I'S disease waste pilfer A FFORDS each user fresh dry s Sanitary Soap Vase Co., scientific american, 1895-02-16

VESSEL. A HUGE METEORITE RECENTLY DISCOVERED. with one end slightly projecting above the level. Pro AN ANCIENT FIRE ENGINE. Novel Method of Killing Hawks. THE 'PREUSSEN' THE WORLD'S LARGEST BAILING VESSEL. BACUBIRIT A HUGE METEORITE RECENTLY

AMERICAN RING CO. Box P. Waterbury Conn KNIGHT GAS AND GASOLINE ENGINE KNIGHT MFG. CO. CANTON OHIO. FRONTIER GAS ENGINES. FRONTIER IRON WORKS DID YOU EVER CYCLE AFOOT? BUFFALO FOOT CYCLES Mountain Lake and all Summer Resorts. TO CRUISE AFOOT IS ALL

NOVEMBER 5 1904. CATTLE GUARD FOR RAILWAY CROSSINGS. SOLAR MOTOR. Scientific American ATTACHMENT FOR BOLT-HEADING MACHINES. SPEED-INDICATING ALARM. Paterzt Department, 1904-11-05

H. M. QUACKENBUSH'S SAFETY CARTRIDGE RIFLE. The Best Accurate Rifle Yet Offered for the Money. ( THE ONLY GENTLEMAN'S LAUNCH BUILT. No Government Inspection. No Licensed Engineer. The Simplest Safest and Best Pleasure Boat. VAN DEN'S= PUMP PUMPS ANY

A New Patent-Selling Scheme. Working of Patent Acts. The Inventor of the Thermometer. Electrical Invention. Agricultural Implements Wanted for an Agricul tural Museum in Cuba., scientific american, 1901-12-28

THE SCIENTIFIC AMERICAN. 207 Sur gffeachtittta flip Mrfinber. York. ffrtitint & es, 1860-09-22

Facts forthe Ladies. MUNN & CO. EUROPEAN PATENTS. Schedule of Patent Office Fees t THE MINES OF THE WEST: SIXTEEN ILLUSTRATIONS AT FACTORY PRICES. MUSICAL INDEPENDENT SIGNET RING Steam Engines and other Machinery for Sale at a great Sacrifice !

The Trade in Modern Antiquities. IMPROVED ROTATING SAMPLE STAND. IMPROVED PAIL. IMPROVED MUSIC LEAF TURNER. Rainbows. The Dust Cloud from Krakatoa. To Protect the Alligators., scientific american, 84-03-15

Prime Plovers and Their Accessories. Pertaining to Vehicles. Designs. Business and Personal Wants. sary to give the number of the inquiry. NUNN & CO. price., scientific american, 1905-05-20

WATER-WIIPML—Robt. Ross (assignor to himself and, scientific american, 1859-06-25

Week Ending flay 15 1897. THE UNITED STATES AND THE PARIS EXPOSITION. SHADE TREES FOR THE STREETS OF NEW YORK. BRITISH INTEREST IN THE NICARAGUA CANAL. THE MISSISSIPPI FLOODS. possible way to prevent an overflow at the next flood THE MERITS OF THE

Caventou. What the Telephone Blight have been Called. ASTRONOMICAL NOTES. BY BERLIN H. WRIGHT. Astronomical Notes. Position of Planets for February 1878. Mercury. Venus. Mars. Jupiter. Saturn. Uranus. Neptune.S Another Railway Bridge Disaster. .

Contents: Rumford Chemical Works., scientific american, 1868-03-28

WATERMAN MARINE 0TORS Here is Model X . Make a Motor Boat of a.ny Boat in 5 Minutes CANOE MOTOR cluding foundation. Ready to put Let us send you descriptive catalog. You don't WATERMAN MARINE MOTOR CO. ' 509 West Fort Street Detroit Mich. U. S. A.

Tungstate of Soda HYDRAULIC JACK., scientific american, 1873-07-05

of hot water for bath and kitchen sink. Very economical in fuel. The 'Heatencook' has been in use for five years. About 1(0) ranges are now giving the greatest satisfaction in many most delightful homes. It is just what you want. Send for catalogue

Scientific Interim. Woodworth's Patent. The Jacquard Machine--Its inventor. Science and Religion. George Canning. Arts Manufactures and Ma chinery., scientific american, 1848-05-27

Scientific Memoranda. Hydraulics. 4 Steamship 'Atlantic' Tribute to American Nautical Skill. LITERARY NOTICES. INVENTORS The Best Mechanical Paper SIXTH VOLUME OF THE SCIENTIFIC AMERICAN. 10 copies for 6 mos. $8 I 15 copies for 12 mos. $22 PREMIUM.

Upsetting of Leaden Bullets. DUTTON AND MAGUIRE'S PUMP TUBE. MANUFACTURE OF MAGNESIUM AND SODIUM., scientific american, 1867-08-17

Extensions. De algae., scientific american, 1866-06-23

We manufacture description. Gates Iron Works Dept. C. 650 Elston Av.Chicag0 Automatic Wire Forming Machinery TELEPHONES WELL DRILLING MACHINERX MANUFACTURED BY WILLIAMS BROTHERS. MOUNTED OR ON SILLS FOR DEEP OR SHALLOW WELLS WITH STEAM OR NORSE POWER

OTTMAR MERGENTHALER. Appendicitis Caused by the Habit of Crossing the Legs. THE DEATH OF A GREAT INVENTOR., scientific american, 1899-11-11

450 MAY 3 1879.1 Enormous Public Works in France. SEWING MACHINE MANUFACTURE. PECK'S AMALGAMATOR., scientific american, 1879-05-03

Pyrites as a Source of Sulphur. The Wave Theory. Foreign Matter in Wood. An. Improvement Needed in Railroad Management. rieragetimir arstiiptiptialigne.2A 0;filLeali, scientific american, 1868-06-13

Recent Experiments on the Passive State of Metals. FURNACES BEING DISCHARGED AFTER EXTRACTION OF PHOSPHORUS. which they acquire singular properties and remain, scientific american, 1901-03-23

scientific american, 1862-11-22

THE ADVOCATE OF INDUSTRY AND JOURNAL OF SCIENTIFIC MECHANICAL AND OTHER IMPROVEMENTS. BROWN'S HOT WATER APPARATUS. Fulminating Quicksilver. The Uncertainties of History. The Government and Agriculture. Traction Engines. A Deadly Color., scientific

NOVEMBER 17 1894.1 How to Hake a Herbarium. BY HELENA. D. LIMNING. Causes for Lameness. 0 The Cold Storage Industry. Planting Potatoes in the Fall. Remedy for Leprosy., scientific american, 1894-11-17

scientific american, 1867-07-11

Time recorder. watchman's. J. Bachner Tool combination D. Ladster To Manu facturers SHIELDS & BROWN For BOILERS and STEAM PIPES Reduces Condensation of Steam. F'OR. G-A.S A.1 TEi WATER. PIPES. Prevents Sweating and Freezing 143 Worth Street New York.

Artificial Cooling and a New System of Heating. The Sportsmen's Show. THE HEAVENS IN MARCH. The British International Cup Race for Motor Boats., scientific american, 1904-03-05

The Retrograde or Direct Motion of the Sun.4414Tried on the Square. 1. The New Patent Law Bill in England.ro. Superheated Steam. +of.Professor Young on our Knowledge of the Sun. Wrinkle No. 2., scientific american, 1873-05-10

AN IMPROVED WRENCH. STORES' WRENCH. A RENAISSANCE WOOD CARVING. Speed of Trolley Cara. A CHEAP AND EFFICIENT HINGE. RODES' HINGE. A RENAISSANCE WOOD CARVING IN ANTWERP., scientific american, 1896-12-12

COMMUNICATIONS RECEIVED. acknowledges with much pleasure the re ceipt of original papers and contributions upon the following subjects : D. L. S. Index of Inventions Letters Patent of the United Rat( s October 28 1873, scientific american,

Improved Invalid Bedstead. Improved Friion Brake. Improved Pegging Awl. Improved Hay Press. Improved Nut Lock. Improved Spring Bed Bottom. Improved Cross Head for Locomotives. Improved Billiard Table Leveler. Improved Gin Saw Filing Machine. Improved

Home Nursing. A.M. P.M. The Inventor and the Machinist. The Washington Monument. A Specimen of American Progress. To Tan Skins with Fur On. Writing and Lettering upon Steel. Aluminum Foil. Burnt Iron and Steel. A.M. P.M., scientific american,

Nursing Hints AND FIRE REGULATOR COMPANY No. 5 Park Placg New Yolk. SKIL 26 the best forge hammer now in use for all forAings under six inches. itH. AL A.IIES & CO. COTT Courtlandt street. 8 4 guard chucks; woolen and cotton inaohinery and supplies.

Following the Equator Following the Equator Roughing It Roughing It Life on the Mi ss i s sippi The Gilded Age The Gilded Age (volgi The Adventures of Tom Sawyer Harper 6. Brothers HARPER ea. BROTHERS MANUFACTURERS. LET US LEARN HOW TO INVENT LEARN

scientific american, 1881-04-30

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECH ANICS. CHEMISTRY AND MANUFACTURES. [NEW SERIES.) Improvement In Looms. LYALL'S PATENT POSITIVE ?LOTION LOOM., scientific american, 1869-07-10

Classified Advertisements BUSINESS OPPORTUNITIES. PATENTS FOR SALE. AGENTS WANTED. TYPEWRITERS. MOTION PICTURES. MODELS & EXPERIMENTAL WORK. AUTOS. BOOKS AND MAGAZINES. CORRESPONDENCE SCHOOLS. SCHOOLS AND COLLEGES. PHOTOGRAPHY. Hand-Forged Victor

A NOVEL MECHANICAL MOVEMENT. IMPROVED GRAPPLING TOOLS. . POND'S PATENT SPANNER. Restoration of Burnt Steel., scientific american, 1874-07-04

Footagnaed Power SENECA PALLS 24YG. COMPANY. Scientific Book Catalogue THE E. W. VANDUZEN CO. The Curtis Balanced Steam Trap D'ESTE & SEELEY CO. BOSTON. STARRETT'S IMPROVED SPEED INDICATOR. LITTLE GIANT BOLT CUTTERS and NUT TAPPERS. 01 TOP AGAIN! OUR

been reduced to the requisite size it is flattened by drawing it from one reel and winding it upon another and passing it between a pair of pressure steel rollers. After this the flattened wire is next hardened and nature and object to the hardening

MARCH 21 1891.1 INDEX OF INVENTIONS For which Letters Patent of the United States were Granted March 10 1891 AND EACH BEARING THAT DATE. 448.142, scientific american, 1891-03-21

made for the exhibition of live stock of all kinds bench show of dogs and the like. All classes of manufactured products are to be shown on the second story of the building. A very large list of premiums feature of the State's progress., scientific

THE ARCHER FIRM Wisdom of Plants. Carbonic Oxide in Common Furnaces. Indigestion and Disease. The Marseilles Tea Trade. THE ARCHER FISH., scientific american, 1883-03-31

PATENTS 37 Park Row N. Y. Branch Depots: mt-ER-FEEDERS SEND FOR ILLUSTRATED CATALOGUE PORTLAND CEMENT Bridge and Roof Bolts. STEEL & IRON SET SCREWS Asbestos Materials. MORRIS TASKER cf CO. PASCAL IRON WORKS: PHILADELPHIA TANNATE OF SODA IRON PLANERS

Notes and Queries. WOOD or METAL THE HALL BRASS PIPE WRENCH. WALWORTH MANUFACTURING CO. THE B. F. BARNES WATER EMERY TOOL GRINDER B. F. BARNES COMPANY Rockford Ill. Apple Economical Gas Engine Igniters THE HOPPES Feed-Water Heater Heats and Purifies

scientific american, 1875-12-11

Inventor of the Gimlet Screw? Andree's Balloon Expedition. The Production of Large Artificial Diamonds. Asiatic and African Explorations in 1896. Science Notes., scientific american, 1897-09-18

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