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ZULU WITH WAX HEAD-RING COCOON ANKLETS FROM NATAL. the cord to rotate the pulley the rubber band being Annual Production of Rubber. The Current Supplement. SUPPLEMENT. A Recent Theory of Jalectricity. than Ampdre's 'elementary molecular currents.'

STEAM ENGINES AND BOILERSThe .1FRON FOUNDERS FACING DUST.-.An ArsOTTON MACHINERY FOR SALE, scientific american, 1850-07-13

THE EARS OF WORMS CRUSTACEANS AND ANTS. BY JAMES WEIR JR. M.D. Fig. 1. Fig. 2. The ears of ants are situated in their leg. If an ant's A scientific note in Appleton's Popular Science Fig. 4. charge of signal equipment. Fig. 3., scientific american,

of our Catalogue of Scientific and Technical Books which contains TYPEWRITERS MAKES ON THEPRESS ! THE FOURTH DIMENSION Price $1.50 net. 260 pages illustrated ORDER FROM YOUR BOOKDEALER OR FROM Please mention the SCIENTIFIC AMERICAN when writing to

The 'Kaiserin Auguste Victoria'. The largest steamship. Palm room, main stairway, smoking room. Scientific American, 1906-06-16

PHOTOGRAPHIC NOTES. Medicinal Qualities of Onions. To Perforate Earthenware., scientific american, 88-03-17

The Life of Our Present Literature. CANNON MAGNETS. Two Centenarians. A BICYCLE HOLDER AND LOCK. TAYLOR'S BICYCLE HOLDER AND LOCK. The Coloring of Soap and Candles. CANNON MAGNETS., scientific american, 1895-02-02

scientific american, 1853-09-03

ASTRONOMICAL NOTES. OBSERVATORY OF VASSAR COLLEGE. Positions of Planets for March 1875. Mercury. Venus. Mars. Jupiter. Saturn. Utilization of Exhaust Steam. Sleeplessness. Good Words for the 'Science Record.”4. Ltiranus. Neptune. Sun Spots. Can

ROLLER PRESSURE REGULATOR FOR CANE MILLS. A PROPOSED APPARATUS FOR A FALL OF 1000 FEET. Fig. 1CAGE FOR HIGH FALLS IN SPACE AND WELL FOR ITS RECEPTION—DETAILS OF THE SERIES OF CONES. Iridescence of Glass. A Novel Sea Barrier. To Prevent Electricity

ApRIL 16 1892. AN IMPROVED POULTRY BROODER. BARNEY'S POULTRY BROODER. the pad plates and the belly girths are secured be tween the pads and pad plates. Owing to the pivotal The Jack Rabbit Plague in California. Steam as an Agent in Causing the Spread

Week Ending December 20 1890. SUBSCRIBERS ATTENTION! Those intending to renew their subscriptions to the NEW PATENT SELLING TRICK. TUNNEL RAILWAYS IN NEW YORK. TEE ARTIFICIAL PRODUCTION OF RAIN., scientific american, 1890-12-20

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART. SCIENCE MECHANICS. CHEMISTRY AND MANUFACTURES. Fi43:20 per Annum. Vol. NUMNo. 24.1 [NEW SERIES., scientific american, 1880-06-12

saturated with alumina; this requires about forty-eight hours to accomplish. The solu tion is then run off in leaden coolers where the alum concretes into cakes. bierge London has pa tented a peculiar pro cess for manufacturing chlorine and accessory

ratus. Chemistry and Chemical Apparatus. Pharmacy Etc., scientific american, 1881-12-31

Patent Case—Planing Machine. Improved Method of Churning. Mechanics Convention at Atlanta Ga. To Cure Corns. Pearl Soft Soap. Marine Soap. American Telegraph in Sweden. Colt's Repeating Fire Arms., scientific american, 1851-06-14

Valuable Volumes Electricians' Handy Book PRICE $4.00 modern Gas-Engines and Producer= 6as Plants Scientific American Reference Book THE SALE OF PATENTS Electrical Engineering and Experimental Work ot Every Description ia d. International Specialty

cold-blast., scientific american, 1860-03-17

AN ELECTRIC LAMP COVER AND SWITCH. closing and protecting an electric lamp is so construct ed that the lamp will always be extinguished when the covers are closed upon it. The improvement has been patented by Mr. Emil T. Mueller La Crosse Wis. The

an be done to a great enterprise in the minds of the tistical figures. So far from the work now being done under our army engineers at the Isthmus being infe rior in quantity to that accomplished under civilian -engineers on one of our great western

How to Make the Hair Grow. Petrifying Springs. Paint the Shingles. DECISIONS RELATING TO PATENTS. Executions by Electricity. New Process of Hardening Plaster of Paris. Acrophobia., scientific american, 1889-03-23

THE AUTOGENOUS SOLDERING OF ALUMINIUM IN AERONAUTIC CONSTRUCTION. phase supply by the two-wattmeter rutthod., scientific american, 1908-06-20

A FRENCH MODEL ACETYLENE LAMP. STREET POSTAL CAR SYSTEMS OF NEW YORK AND BROOKLYN., scientific american, 1896-02-29

You Have a Telephone In Your 9ffice Of Course Valuable Volumes 15000 Receipts. 734 Pages. 900 New Formulas. Scientific American Reference Book MECHANICAL MOVEMENTS Powers Devices and Appliances with Descriptive Text. Price 93.00. MECHANICAL

FAULTY FEATURES IN OUR PROPOSED SHEATHED AND COPPERED CRUISERS., scientific american, 1899-08-19

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. XXXVIIINo. 5. [NEW SERIES. 3.20 per Annum. THE GILBERT ELEVATED RAILWAY. THE GILBERT ELEVATED RAILWAY IN NEW YORK CITY.10, scientific american,

SWINGING HYDRAULIC CAPSTAN. A SWINGING HYDRAULIC CAPSTAN. NEW FORM OF TOWING STEAMERS. NEW FORM OF TOWING STEAMERS., scientific american, 90-09-13

41 Zite Nentifir rnetigan. APPLICATIONS OF GLYCERIN. Useful Practical Receipts., scientific american, 1865-04-08

TRADE MARKS. DESIGNS. Inside Page each Insertion 75 cents a line. Back Page each insertion61.00 a line. AIR-TiCHT RUBBER TIP PEARL MUCILAGE. A Perfect Self. Feeder. Cannot 'GUM UP.' Evaporation! The Nassau Mfg. Co.14 0 Nassau St.NewYork. THE BEST

A TRACTION WHEEL FOR HARVESTERS TRACTION ENGINES ETC. Ice from Natural Gas. AN IMPROVED CALIPER. AN IMPROVED RAIL SOINT. LYNN'S AUTOMATIC WATER FILTER., scientific american, 1894-07-07

DOUBLE SEATED LOCK SAFETY VALVE. A german journal gives the following method for impart ing a fire-proof bronze color to copper and brass. We cannot speak from any personal test as to the value of the method but have generally found such formulas

66 Vite c akintricati Talent and Opportunity. Taming Fish., scientific american, 64-07-30

If You Want to Know Anything About Business Torrey Strops $ 1 5. DESIGNS. WM. G. WILLARD COAL Motion Picture GOODELL-PRATT COMPANY MACHINES and FILMS STEREOPTICONS and SLIDES Greenfield Mass. AND USE WEED'S TIRE GRIPS Positively Stops Slipping or

Trip' Without Uncertainty? Investigate the We are ready t ' SHOW YOU' THE HILDRETH MFO. CO. The KW Magnet For jump spark only.Just the Motor Boat. Does away with all THE K-W IGNITION CO. IS to 1 South Clinton Street., scientific american,

162 THE SCIENTIFIC AMERICAN., 60-03-10

HOLLOW AUGER. RODMAN'S HOLLOW AUGER. 4 Roof Water as a Motive Power. The Value of a Compost Heap. Magnetic Iron Sand in New Zealand. CROSS CUT SAW FRAME. SCHOOLEY'S CROSS CUT SAW FRAME. The Creosoting of Timber. Cable Telegraphy. IMPROVED VISE.

A NEW PHOTOMETER. Casson's Steel Process. The Great Chicago-Mississippi Waterway. VAN CHOATE'S ELECTRIC PHOTOMETER. The Discouragement of Industry. Tools of the Pyramid Builders., scientific american, 1892-09-03

American Workmen Back from Europe. Expedition to Observe the Eclipse of the Sun December 22. New Lumbering Enterprise. Zumbirman. PHOTOGRAPHIC NOTES., scientific american, 1889-10-05

WEST SPRUCE STREET BAPTIST CHURCH. A New and Cheap Form of Constant Battery. Refining Iron Without Puddling. Narrow Gage Railway., scientific american, 1869-01-23

BURNHAM'S SELF-ADJUSTING SWING CHECK VALVE; Users of Check Valves will please note the advantages theseValves possess wears the yoke that passes around the seat moves away from the seat in proportion to the wear of the Disk thus causing a uniform

Improved Cane.Juice Evaporator. Catching Tigers in Cochin China. Choice Violins. Feeding Oats to Horses. THE BEST MECHANICAL PAPER IN THE WORLD EIGHTEENTH YEAR! CORY'S CANE-JUICE EVAPORATOR., scientific american, 1862-08-02

VARIOUS METHODS OF COOLING AIR In rangement is ingeniously conceived but complicated. tag passed over and given its coolness to the air which pane IG., scientific american, 1874-07-11

The AMERICAN CENTENNIAL 1876 Xnotnefiti and Agertional, scientific american, 1876-11-04

A RUDDER AND SCREW COMBINED. THE 1CUNSTADTER RUDDER SCREW., scientific american, 1878-05-18

THE MARVIN SEISMOGRAPH. BY IEff2It V. TRIEPEL. THE MARVIN SEISMOGRAPH. A HORSELESS BROUGHAM. Superstition of a Well-Known Writer. SEISMOGRAPH RECORDER. A HORSELESS BROUGHAM., scientific american, 1897-08-07

THE ADVOCATE OF INDUSTRY AND JOURNAL OF SCIENTIFIC MECHANICAL AND OTHER IMPROVEMENTS SUBMARINE CARRIAGE WAY Scientific American HOLCOMB'S I., 1857-06-06

PATENT CAST-IRON CAISSONS. Figure 2. THE Scientific Americaxt CIRCULATION 16000. PUBLISHED WEEKLY BY MUNN & COMPANY. ¢5700. Paving in Paris. Poison Ivy. Figure IMPROVED GRAIN CLEANER., scientific american, 1852-08-07

RECENTLY PATENTED INVENTIONS. Electrical Devices. Medical Appliances. Hardware. Of Interest to Farmers. Heating and Lighting. Railways and Their Accessories. Of General Interest. Household Utilities. Machines and Mechanical Devices. Pertaining to

BICYCLE AMBULANCE. THE NEW NORDENFELT SUBMARINE BOAT. BICYCLE AMBULANCE. THE NEW SUBMARINE BOAT NORDENFELT. damage sustained. Being directed to attack a steamer, scientific american, 1887-07-30

PORTABLE FOUNTAIN WATER CLOSET. PORTABLE FOUNTAIN WATER CLOSET. PORTABLE FOUNTAIN WATER CLOSET. STEAMBOATS FOR SOUTH AMERICAN RIVERS. IMPROVED TONGS BOARDMAN'S TONGS. Prolongation of Life. & g tial a:STERN-WHEEL STEAMER OF STEEL FOR RIVER MAGDALENA

A Remarkable Family of Snakes. Aw'iow Destructive Effects of Nitro-Glycerine. Gas for Ocean Steamers. Bow to Cast a Box on a Shaft. Irwo New British War Ships. A Note en Watering Potted Plants., scientific american, 1887-01-01

The Artificial Alizarine PatentAn Important De cision by the Supreme Court of the United States. A Magnificent Palace Car. FEED GUIDE FOR PRINTING PRESSES. SMITH'S FEED GUIDE FOR PRINTING PRESSES. WAGON BODY. WATER CLOSET. WATER CLOSET. The Indicator

DEVELOPMENT OF THE ASTRONOMICAL TELESCOPE IN FIFTY YEARS. were making fine lenses of 90 to 130 feet focal length. HUYGENS' AERIAL TELESCOPE 1655. REFLECTING TELESCOPE., scientific american, 1896-07-25

THE LOCKE WIRE BINDER OF 1873. THE MODERN AUTOMATIC CORD GRAIN BINDER. THE MARSH HARVESTER OF 1880., scientific american, 1896-07-25

New Edition of the Patent Laws. Patent Claims. AD Terme of Advertising : 12 lines 75 etc. American and Foreign Patent Agency. 128 Fulton street New York. C R AN T ON & PARSHLEY New Haven TENT PLANING MACHINE Planing machines Dick's Presses Punches

SCIENTIFIC AMERICAN ESTABLISHED 1845 Published Weekly at No. 361 Broadway. New York 361 Broadway New York 361 Broadway New York SIDE DOORS FOR SUBWAY CARS GOVERNMENT RESTRICTIONS OF NIAGARA WATER POWER. MARINE ENGINE ENDURANCE. EXTENSIVE

INCINERATION OR BURIAL.SEEMAN & CATROW'S FOLDING CLOTHES HORSE. 4 THE STEAM INDICATOR—ITS VALUE AND USE. goatopandence. The Unit of Iteat--.r. Morley's Fallacy. Our Iron Clad Navy., scientific american, 1867-04-13

SEPTEMBER 24 1892.1 The Volatilization of Quartz. Electric Spark Photography. Bristol and the Chicago Exposition. Locomotive Smoke Consumers. Amidol a Neu Developer., scientific american, 1892-09-24

Improved Gang Plow. 1?-4 Improved Coffee Roaster. NEW USE FOR THE SUN. BEQUERET & DEMOULIN'S GANG PLOW. OUTTA PERCHA CABLE INSULATOR. WHITNEY'S COFFEE ROASTER, scientific american, 1867-03-09

of science and handicraft. THE American Philosophical Society of Philadel phia have awarded the Magellanic prize to Pliny Earle Chase of that city for the discovery of numer ical relations between gravity and magnetism. The sterling. THE white fish

Machine for Applying Stamps. A Mud Sucker. New Method of Electro-Plating. Subterranean Pneumatic Railway. Burglars Using Wedges. ITH'S MACHINE FOR APPLYING STMEPS., scientific american, 1865-03-18

Vol. 13.1 VALVES AND HYDRANTS. IA VALVES AND HYDRANTS.-WORKS OF THE CHAPMAN VALVE MANUFACTURING COMPANY., scientific american, 1885-09-26

the Development of a Total of 415000 Horse-Power. Vol. XCIIINo. 7. I 8 CENTS A COPY. L $3.00 A YEAR., scientific american, 1905-08-12

EMERSON'S PATENT READ! READ!! READ!!! Nrertiot Inside Page each insertion75 cents a line. Back Page each insertion$1.00 a line. Best Tempered Cast Steel. Fisher & Norris Trenton N. J. ' SPECIAL ' Steam Pump REDUCED PRICE LIST. 1 A. M. CAMERON NEW

TURNER'S ROTARY STEAM ENGINE. ORNAMENTAL PETROLEUM STOVE. TEE 'OSCILLATING OR VARIABLE ECCENTRIC MOTION., scientific american, 1868-06-20

A London Factory. Examining the Gas Bag Before Shipment. Roping the Concentrating Hoops. HOW TO CONSTRUCT A BALLOON., scientific american, 1908-03-28

394, scientific american, 1853-08-27

IMPROVED STEAM ENGINE CUT-OFF. Gas Iron. A NEW DUMPING SCOW. ALLEN'S DUMPING SCOW.-Pig. 1. Report of the Chief of Engineers U.S.A. Centennial Medals. FISH'S VARIABLE CUT-OFF., scientific american, 77-03-17

is owned by some Mexican proprietors. The Hanover, scientific american, 1860-01-14

$3.00 A YEAR. Vol. XCVIIINo. 14.i CIENTIFIC MERICAN, scientific american, 1908-04-04, a new apparatus for submarine operations

370 NEW ICE HARVESTING INVENTION. 44 IMPROVED SEED PLANTER. 400 0. HOW TO MAKE PAPER CAPS. Brain Work. COMBINED TOOL. STEAM BOILER EXPLOSIONS., scientific american, 1872-12-14

scientific american, 1905-07-11

$4, scientific american, 1860-07-21

RELIGIONS LITERATURE PEOPLES NATIONS COVERNMENTS. PRINTING INKS. IDE CYCLES! JENKINS' AUTOMATIC AIR VALVE Springfield Roadster. BOSTON' MASS. Steam! Steam! Quality Higher Price Lower. 2-Horse Eureka Boiler and Engine - $135 B. W. PAYNE & SONS The

SEPTEMBER 2 1899. ICE MANUFACTURE ON A NEW SYSTEM. AMMONIA GAS ?Itr OR DIAGRAM OF THE AMMONIA AND ICE-MAKING PLANT. Firemen Killed by a Live Wire. Russian Caravan scientific american, 1899-09-02

gant and the specifications which had been made by the engineer for the work to be done unworthy of the pro fession as exhibiting great ignorance of surveying and of being disseminated throughout the whole earth. patent for sewing machines. Mr. Howe

A CONVENIENT BENCH VIBE. LDRIE'S BENCH VISE. THE IMPERIAL INSTITUTE LONDON. STREETER'S APPARATUS FOR THAWING OUT FROZEN PIPES ETC. THE NEW IMPERIAL INSTITUTE LONDON. .4 -, scientific american, 1893-08-19

PRUNING ORNAMENTAL TRIM The African Inland Sea. Fig. 9. some places as low as 165 feet below that levelIron., scientific american, 1885-04-25

WHAT WE HAVE DONE IN 1869 AND WHAT WE INTEND TO DO IN 1870. BRAIN AND MUSCLE. THE SPIRIT OF THE AGE. PROGRESS OF LABOR. THE STEAM EfIGIBE INDICATOR., scientific american, 1869-12-11

COLLISION BALLS AND HARMONIC IMPACT. COLLISION BALLS. HARMONIC IMPACT., scientific american, 1886-07-17

NOVEMBER 4 1876. THE HERIPTERA OR BUGS. THE BURBOT. THE BURBOT (LOT A VULGARIS). PENTATODIA GRISEA., scientific american, 1876-11-04

Contents, scientific american, 1872-01-13

SMALLPDX. STEAM BOILER NOTES. RESIGNATION OF THE COMMISSIONER OF PATENTS. Steamboat Inspection A 4Ball Holes In Glass., scientific american, 1881-12-10

TEERMOSCOPIC BALANCE. The Duration of the Sun. IIMPROVED MARINE DREDGER. Ft. In. Length between perpendiculars 130 0 Breadth moulded 30 0 Depth 8 0 Stroke of pumps 14 Diameter of high pressure cylinder 16% low pressure ' 33 Length of stroke 24

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. 1$3 per Annum. Adaptation of the Hydraulic Jack to Starting En gines from their Dead Centers. ORNAMENTING GLASS PORCELAIN ETC. - A Specimen cot Hydrogen from

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. XLINo. 13.1 3.20 per Annum.1 1 A WONDERFUL CLOCK. Traction Engines on Common Roads. MEIER'S NATIONAL AND ASTRONOMICAL CLOCK, scientific american,

The Great State Fair. To our Subseribers.--The End of the Volume. London Industrial Exhibition To Our Cotemporaries., scientific american, 1850-09-14

Inside Page each insertion . 75 cents a line. Back Page each insertion 31.00 a line. ICE MAKING MACHINES COLD AIR MACHINES age Warehouses Hospitals etc. PICTET ARTIFICIAL ICE CO. (Limited) 141 Greenwich Street CET THE BEST AND CHEAPEST. =1 L 1 1

THE UNITED STATES BATTLE SHIP IOWA. -4-1 The Advantage of Being a Blacksmith. THE UNITED STATES BATTLE SHIP IOWA. Use of Cocaine on the Race Track. Water Vapor in the Atmosphere of Mars., scientific american, 1896-01-04

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. The Cost of Pauperism. What Electricity is Doing. The Inventor of the Polka., scientific american, 1895-10-12

SLAP-WELDING A 16-INCH PIPE. 5FORMING UP A 5-INCH PIPE. 4LAP-WELDING ROLLS AND MANDREL., scientific american, 1897-12-18

Another 8000 Ton Steamer. Large Photograph. Antidote to the Poison of Serpents. NOVEL BOTTLE WRAPPER. is IMPROVED SOLDERING IRON. IMPROVED SOLDERING IRON MISCELLANEOUS INVENTIONS. NEW BOTTLE WRAPPER., scientific american, 1881-12-10

INSPECTIONS DAMAGE PROPERTY 64') LOSSOr T PERSONS CAV SEBB‘t THOROUGH .1 -PfigacEeSEERLTARY V PrALtEtt IRVictlitestsetr TREAS. LF.hitoniinnto Aser 1 SHAHS STOOD Tilt MT 3943 MILES IN 32 HOURS 21 MINUTES STEARNS STEAM CARRIAGE COMPANY Syracuse. N.

Vol. LXXV No. .3 THE NEW EAST RIVER BRIDGE. Statue or Liberty. Hudson River. Jersey City., scientific american, 96-09-12

scientific american, 1848-04-01

TO THE NORTH POLE IN A BALLOON. Fig. EXTERIOR OF THE CAR. Fig. 2VIEW OF THE INTERIOR OF THE CAR., scientific american, 1890-12-20

Animal Power vs. Steam. American Industries The Quality of Our Labor. THE STATUE OF LIBERTY NEARING COMPLETION. STATUE OF LIBERTYVIEW AT TOP OF PEDESTAL SHOWING THE SHELL AND BRACING. Diminutive Mail Matter., scientific american, 1886-08-14

Week ending January 25 1879. THE TRANSMUTATION OF ELEMENTS. THE FOURTH STATE OF MATTER. AMERICAN INDUSTRIESNo. 3. Contents., scientific american, 1879-01-25

Tending Toward Zero. The Photographic Decoration of Glass and Porcelain. BY WILLIAM GAMBLE. Molasses Pavements., scientific american, 1895-08-10

scientific american, 1868-02-29

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