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1846. PUBLISHED WEEKLY AT NO. 87 PARK ROW NEW YORK. 0. D. U21N. A. E. BEACH. TERMS FOR THE SCIENTIFIC AMERICAN. Club Rates. scriber then receives the paper free of charge. NorEPersons subscribing will please to give their full names and Post Office

NEW YORK BELTING &PACKINC CO. SOLID VULCANITE EMERY WHEELS. Vulcanized Rubber Fabrics HARPER'S PERIODICALS HARPER'S MAGAZINE One Year$4.00 HARPER'S WEEKLY One Year 4.00 HARPER'S BAZAR One Year4.00 HARPER'S YOUNG PEOPLE One Year - 2.00 PAIN TROOFs

FEED WATER HEATER. ATTACHMENT FOR COOKING STOVES. ilbtl?lif WW141.Y1 NIFENEWIER'S ATTACHMENT FOR COOKING STOVES. DEVICE FOR PLACING FUSIBLE PLUGS IN BOILERS. ELECTRICAL GAS ALARM. Impure Ice. MeVAY'S ELECTRICAL GAS ALARM. plate Fig. 1 the ends of

MACHINISTS' USE. Preserving Fresh Flowers. MANUFACTURING MINING AND RAILROAD ITEMS., scientific american, 1868-02-01

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECIIANICS CHEMISTRY AND MANUFACTURES. 1$3 per Annum. SPOOL BLANK ROUGHING MACHINE. COMBINED HAND AND FOOT CIRCULAR SAWING MACHINE. Light of the Vapor of Iodine. HAWKINS' SPOOL BLANK ROUGHING

Caterpillars Occupy a Railway. The Value of an Idea. Rock Brills and Compressors. iletails of the tools and machinery employed. It is a The First Electrical Execution. Aphasia and Apraxia. Interesting Scientific Exhibits. The Eastward Ocean Record

Chemically Preserving Potatoes. Transfusion of Blood in Its Legal Aspects. Steam Consumption of Locomotives. Spontaneous Combustion of Sodium Peroxide and Aluminum. The Trolley. Atnmonium Nitrate. Fireproofing Compounds., scientific american,

A LENS WITH VARIABLE FOCUS. DR. CUSCO'S LENS WITH VARIABLE FOCUS. NEW INVENTIONS., scientific american, 1880-08-28

The Etching of Glass. Progress of Chilian Trade. GROWTH OF A WOODEN CATERPILLAR. THE ' AWET' OR VEGETABLE CATERPILLAR. Compound Locomotives. 4 Why Some Men do not Succeed., scientific american, 1890-09-27

scientific american, 1859-12-10

275 CONVERTIBLE EXTENSION TABLE—MiChael APPARATUS FOR RAISING LEATHER FROM VATS—C. WARM AIR REGISTERS AND VENTILATORS—Edward SUPPLYING TENDERS WITH WATER AT RAILROAD STA FURNACES OF LOCOMOTIVE BOILERS—Ross Winans Of RAKING AND DELIVERING

Coal Dust Fuel In France. FIFTY HORSE POWER COMPOUND ENGINE AND BOILER., scientific american, 1884-08-23

scientific american, 1859-10-15

MACHINES ZS OR FINISHING FABRICS. IMPROVED MACHINE FOR FINISHING FABRICS., scientific american, 1881-06-11

MACHINERY II p ARTESIAN and Oil Welt Supply Co. OIL WELL SUPPLY CO. Ltd. Pittsburgh Pa PUBLICATIONS FOR 1889. 12 lioins.fan .4t Iy 4.4ei. 4 he 50e.1010LEA F''' p SAVE MONEY. Before you buy BICYCLE orGUN COMPLETE STEAM PUMP ' ware CoBoston. Mass. ICE

A. S. CAMERON & CO. ENGINEERS Works foot of East 23d Street New York City. sit g4dvat1ontuntt MACHINE SHOP For Sale AMERICAN CHARCOAL IRON Boiler Tubes. WROUGHT-IRON TUBES AND FITTINGS FOR GAS STEAM WATER AND OIL. NO. 15 GOLD ST NEW YORK. A MAHOGANY

Oscillating Engines Double and Single 1-2 t 100-Horse power. Centrifugal Pumps 100 to 100000 Gallons per Minute Best Pumps in the World pass Send for etre? lank NEW and 2d-HAND THEA NECTAR WITH THE 9EATING FACTORIES. 'P'liffED BY) $25 cheaper than

THE Scientific American IRON REFINING AND PUDDLING FURNACES.Fig. 1. PUBLISHEDMIELE der in 6 menthe. Method of Detecting Counterfeit Silver Coin. Factory Labor in Rhode Island. 0Ummemlim-mm 77:7.==.awurm.m Mr l, 1853-08-20

459 OCTOBER I I88I.1 COTTON AND ITS FUTUREAN OPPORTUNITY FOR IN VENTION REVOLVING SPINDLE-HAND COTTON PICKER. Q f the wire cloth. This machine was, scientific american, 1881-10-01

Winter Precautions for Hydrants Valves Etc. Benzoate of Soda. The Fruit of Shrubby Trefoil as a Substitute for Hops. The World's Commercial Marine. National Exhibitions., scientific american, 1879-12-20

APRIL 30 1898. NOTICE OF A NEW RIBBON FISH FROM THE COAST OF OREGON. THE NEW WAVE MOTOR. WAVE MOTOR AT POTENCIA CALIFORNIA. NEW RIBBON FISH FROM THE COAST OF OREGON. =.', scientific american, 1898-04-30

225 Zinc as an anti-inernstant 159 Zinc In boilers 212 Zodiacal light 185 Saw. steel rail, scientific american, 1876-12-23

scientific american, 1904-02-06

TROLLEY FINDER. TROLLEY FINDER. SAFETY ALARM DEVICE FOR MARINE VESSELS. SAFETY ALARM DEVICE FOR MARINE VESSELS. First Dynamo Described in a United States Patent. IMPROVED FEED-WATER FILTER. EASILY-CLEANED FEED-WATER FILTER. .Department, scientific

Look Out for Old Oil Barrels. °Joanne Laniinee. THE NEW YORK HERALD ESTABLISHMENT—THE PRESS ROOM CORRIDOR., scientific american, 1895-05-04

It, scientific american, 1899-11-04

NEW YORK. MACHINISTS' TOOLS. NEW HAVEN MANUFACTURING CO. New Haven Conn. STEAM ENGINE CHEAP. DO YOUR OWN PRINTING Pond's Tools DAVID W. POND Worcester Mass. STEAM PUMPS. 239 Broadway N. Y. S3 Water Si. Boston. Prices below those of any other steam

scientific american, 1866-01-11

Traversing Bar. The Windmill. Substitute for Chloroform. Heat of the Burning Glass. Echoes. Speaking Trumpets., scientific american, 1848-04-08

Some Egg Hatchings. Animal Vocabularies. How to Preserve Cut Flowers. Tempering Mainsprings., scientific american, 1893-09-11

GUATEMALA ITS INHABITANTS AND PRODUCTS- ADVICE TO EMIGRANTS., scientific american, 1870-02-26

The Brotherhood of Locomotive Engineers. THE SPOTTED AMBLYSTOME. Extraction of Tannin. Choice of Seed in Cotton Growing Soles and Turbots in New York Waters. Carrier Pigeons as Doctors' Messengers. gitr., scientific american, 1881-11-19

DESIGNS PATENTED. SCHEDULE OF PATENT FEES. CANADIAN PATENTS. FANCY WOODS WRINKLES AND Hints and Suggestions for Mechanics Engineers Farmers Housekeepers and Workmen generally. Wrinkles and Recipes 04.20 Beek Page9.00 a ans. Inside Page 75 cent. a

specimens were gathered and are exhibited by Mr. C. A: Shelton who has done much towards directing public attention to the agricultural and floral resources and wealth of California. —[Alta Ca lifornia. The Works of the Ctesars and the Stephen son

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. Vol. XXXVI.No. 17. 3.20 per Annum. IMPROVED GAP LATEE. . A Machine Dining Table. WATSON'S GAP LATHE. Agricultural Steam Engines., scientific american,

MARCH 31 1900. PROF. PICTET'S EXPERIMENTS WITH LIQUID AIR. Fig. 4—SOLIDIFICATION OF CARBON DIOXIDE PRO DUCED BY JET OF LIQUID AIR. THE SEPARATION OF LIQUID AIR INTO ITS CONSTITUENTS. Fig. 5PICTET'S EXPERIMENTAL APPARATUS FOR THE LIQUEFACTION OF AIR

CHURN DASHER. Moritz's Jacks for Replacing Cars. Milroy's Method of Constructing Foundations. COPSON'S IMPROVED CORN BROOM. Davis' Spirit Level Plumb and Inclinometer. Device for Raising Water., scientific american, 1871-10-07

The Effects of Wind and Water on Climates. Discovery in Painting with Light. Coal Burning Locomotives. Steam Carriages for Common Roads. Shawk's Steam Fire Engine. What is a Tun Weight of Coal 4 = Securing Corks in Bottles, scientific american,

OFFICIAL REPORT OF Issued by the United States Patent Office PATENTS ARE GRANTED FOR SEVENTEEN YEARS the following being a schedule of fees: On filing each Caveat $10 On issuing each original Patent On appeal toCanmissictier of Patents On application

IMPROVED NIPPLE GRIP. IMPROVED NIPPLE GRIP. HOW TO WATER-PROOF CLOTH. SLED RUNNER ATTACHMENT FOR GO-CARTS. SLED RUNNER ATTACHMENT FOR GO-CARTS. SANTA CLAUS IN A SNOW STORM. APPARATUS FOR PRODUCING THE SNOW STORM EFFECT. HOW TO MAKE LEAD PIPE INTO

PATENT Lathes Planers Shapers The George Place Machinery Agency Rare Chance to Advertise. A Wonderful Dix:ovary. h ores. Fra Nowt. or Beard oven on mouth face. in fromBlito3O4ayeThese rutsre from the original and allow a pdaitive roan. from lug au.

A KANGAROO AT THE ZOOLOGICAL GARDENS LONDON. Photometry of Colored Lights. BABY KANGARO THE FIRST OF THE BRUSH TAILED ROCK SPECIES BORN AT THE ZOOLOGICAL GARDENS., scientific american, 1896-08-08

AUGUST 22 1885. IMPROVED EGG BEATER. A Japanese Patent Law. IMPROVED KNOCKDOWN FURNITURE. Improvements in Gelatino-Chlo ride of Silver Paper. Manufactures from the Air. IMPROVED NUT LOCK. The Treatment of Sick Headache. Distribution of Power by

A POWERFUL OPEN CIRCUIT BATTERY CELL. A POWERFUL OPEN CIRCUIT BATTERY CELL. A CHINESE TYPE WRITER. A FEED-WATER PURIFIER AND SKIMMER FOR BOILERS. A FEED-WATER PURIFIER AND SKIMMER FOR BOILERS. American Locomotives for the East. Howell Gun Carriage.

mar Before the cold Get. Residence Telephone NEW YORK TELEPHONE Co. 15 Dey Street The Way To Be a Thinker The New Science Library 84=PAGE BOOK FREE PUBLIC OPINION 44=60 E. 23d Street New York SAVE FIRE LOSS PROTECT YOUR HOMES AND PROPERTY.

328 Nritutifir The Falls of Niagara. BY RICHARD A. PROCTOR. A NEW BAG RACK. The Alcoholic Disease. How to Carry Unaided an Insensible Man. Ivy Lawns.41The Liquid of Fromherz., scientific american, 1885-05-23

Our Washington Correspondence. The Locusts in Kansas. Growth of the Human Hair alter Death.Copyrighted., scientific american, 77-09-15

No. 361 BROADWAY - NEW YORK. GERMANY'S INDUSTRIAL CRISIS. VAST MUNICIPAL IMPROVEMENTS IN NEW YORK CITY. New York and Brooklyn docks to deep water. To this largement of Governor's Island. RAILWAY SYSTEMS OF THE UNITED STATES. such a sacrifice of

APRIL 4 1874.1 The Early Education of Children. New Process for Iron Making. Launch ot the Cable Ship Faraday. English and American Railways. Pipe Way Transportation. Norwegian Antiquities. Good Work in Canada, scientific american, 1874-04-04

scientific american, 1863-04-11

the highest point ing machines No one having much writing t - Send for new illustrated pamphlet. 281 at 283 Broadway New York. SPEAKING TELEPHONES., scientific american, 1884-02-02

DESIGNS. TRADE MARKS. Back Page each insertion . $1.00 a line. The Sturtevant Mill Crusher and Pulverizer Combined Address STURTEVANT MILL CO. SEBASTIAN MAY & CO'S Improved My Cutting Power Drill Presses Chucks Drills Demand machinists' and ama THE

Patent Nollettors. 37 Park Row. New York. Inventions Patented in England by Americans. FOREIGN PATENTS-.-A HINT TO PATENTEES. MUNN & C Index of Inventions For which Letters Patent of the United States were granted, scientific american, 1872-03-23

Improvement in Slat Doors. Improved Printing Press. Improved Spring for Carriages. Revolving Last Holder. Improved Ship Block. A Singular Diet., scientific american, 1852-04-03

and hydrogen. As there is a large class of organic BESS MIER'S APPARATUS FOR REFINING IRON. AllEildi, scientific american, 1860-12-08

and Personal Wants NEW YORK SCHOOL OF AUTOMOBILE ENGINEERS 146 West 56th Street New York City FOR ChAUFFEURS AND AUTOMOBILE OWNERS B. F. BARNES CO. Rockford. III. Hair Culture, scientific american, 1905-10-14

COMPARATIVELY RECENT GEOLOGICAL CHANGES IN CALIFORNIA. Pure Iron. THE LATE NATHANIEL WHEELER. NATHANIEL WHEELER. ZECENT GEOLOGICAL ACTION SANTA CLARA-SAN BENITO VALLEY CAL Company. nower transmitter, scientific american, 1894-01-27

THE ABIIEBA—A SLIME MONSTER AND ITS VICTIM. AMEBA SHOWING SIX CHANGES DURING THE PROCESS OF FUSION. Fighting Insect Pests. An Early Advertisement of Jenneris Vaccine. HIGHLY MAGNIFIED AMEBA PROTEUS WITH PSEUDOPODIA ADVANCED ENCIRCLING AN UNUSUALLY

THE HARTFORD ELECTRIC LIGHT AND POWER PLANT. THE FARMINGTON RIVER DAM AND POWER HOUSE. THE HARTFORD ELECTRIC LIGHT AND POWER PLANT., scientific american, 1897-10-09

NEW PUBLICATIONS. EXTENSION NOTICE., scientific american, 1867-01-19

THE OBSTRUCTION TO THE NAVIGATION OF RIVERS CAUSED BY THE PIERS OF BRIDGES. BY J. W. SPRAGUE., scientific american, 1860-03-17

Workers Without Steam Power should gm our Foot and Hand Power Machinery. Send for Catalogues A.--Wood-working Machinery B-Lathes etc. 695 Water St.Sznecx Falls N.Y. LO:SEBASTIANALATHEC'97A°c-c=ri' SCIENTIFICALLY SHARPENED. FOR LIGHT WORK. Has These

NOTES ON CONSTRUCTION IN MILD STEEL. WATER WORKS MANAGEMENT AND MAIN Engine and Foot Lathes MACHINE SHOP OUTFITS. TOOLS AND SUPPLIES BEST MATERIALS. BEST WORKMANSHIP. CATALOGUE FREE WET PROCESS CONCRETE IS BEST Ournewlnv incible Concrete Block

American Leads at Whist and KORBAY. DREW LANG. tions drawn by C. S. HEINFIART H. D. Professional Beauties of the Past. illustration drawn by EDITORIAL DEPARTMENTS. CHARLES DUDLEY WARNER 1850 HARPER Starrett's Patent Combination Square Prices from

THE CONDENSED MILK MANUFACTURE Eleetrotypy. Vitt Warming Country Houses. A New Brass., scientific american, 1871-03-25

THE ONLY WHEEL THAT EXCELS OVERSHOTS ! GEORGE TALLCOT Late TALLCOT & UNDERHILL 15 13. II. No. 96 Liberty street N. Y. Lathe Chucks Drills Pumps ; Mortising Tenoning aFd Sash Johnson's ShingleBelting Oil &c. discount on ten cases. T. H. McALLISTER

of caustic potash or soda the follow ing being the most suitable propor tions and best method of preparing the apparatine : 15 parts potato starch clears and forms a thick jelly which is then beaten up vig orously and the longer the operation is

NEW CHEMICAL AND MISCELLANEOUS INVENTIONS. NEW HOUSEHOLD INVENTIONS. 40 40. NEW AGRICULTURAL INVENTIONS. NEW WOODWORKING AND HOUSE AND CARRIAGE BUILDING INVENTIONS. NEW TEXTILE MACHINERY., scientific american, 1876-09-11

NO. 37 PARK ROW NEW YORK. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement THE SCIENTIFIC AMERICAN SUPPLEMENT THE HUMAN MACHINE AND ITS FUEL. VA 4 4IWANTED—TORPEDO DEFENCES., 1877-06-02

SPENCERIAN PEN CO. ENGINE&FOOT WALWORTH MFC. CO. 128 TO 136 FEDERAL STREET BOSTON MASS. INSIDE MICROMETER.with five rode. Price 82.00. TABER PUMP CO. 32 Wells St. Buffalo. N.Y. U. S.A. CD t GREY IRON CASTINGS UTICASTEAM ENGINE AND BOILER WORKS UTICA

370 SCIENTIFIC AMERICAN. Ornamental Metal Surfaces. Platinising by the Moist Way. Scotch Courtesy to America. Ocean Steam Navigation. Large Farm. Bread in a Barrel of Flour. Improvement In Orchestra Boxes. Large Yield. American Gretna Green. Splendid

SCIENTIFIC AMERICAN ESTABLISHED 1845 Published Weekly at No. 361 Broadway New York FOUR LEADING FOREIGN EXHIBITS AT THE WORLD'S FAIR. 10 III THE PENETRATING POWER OF 'IC-RAYS., 1904-08-13

NOVEL AIR BRAKE. NEW LINE-THROWING GUN. MECHANICAL INVENTIONS. HALL'S AIR BRAKE. SPENCER'S LINE-THROWING GUN, scientific american, 80-09-11

The Trade Schools of New York. How to Tell Pure Loaf Sugar. Invisible Wire., scientific american, 1884-03-22

THE COLUMBIA. Forcing Vegetables by Electricity. Florida Oranges and Other Fruits for England. THE NEW UNITED STATES WAR SHIP COLUMBIA. Protection of Salmon in Alaska. A Great Search Light on Mount Washington., scientific american, 92-09-10

CARRIAGE SCREEN. MOORE'S CARRIAGE SCREEN. FIRE ESCAPE. FOGARTY'S FIRE ESCAPE. One and One-quarter Pound Boats. Natural History at Central Park. IMPROVED SINGLE SPRING FOR VEHICLES. Bakusine.' SHEET METAL PICKET FENCE. CRISP'S SHEET METAL PICKET

FINAL RACES AT THE ORMOND AUTOMOBILE MEET. RECORD-HOLDING RACERS AT THE ORMOND AUTOMOBILE MEET., scientific american, 1906-02-10

scientific american, 1905-06-10

APRIL 25 1896. DESIGNS. TRADE MARKS. X RAYS. CROOKES TUBES of approved sizes and types. Also Candelabra Decorative and Miniature Lamps and Elec tric Signs. Alb-fr MINIATURE LAMP DEPARTMENT WHITMAN SADDLE CO. 8 Chambers St. New York W. W. OLIVER 1480

have the same theoretical efficiency as an engine using any other vapor through the same range of tempera ture and the working pressures will be very high s that practical difficulties are met with. Experiments is condensed have verified the

FROST'S VARIETY SELF-CENTERING CHUCK. Application of Electricity in Dyeing. A NEW METHOD OF SECRET WRITING. Captain Burton's Discoveries in the Land of 17dian. IMPROVED BALLASTING TUBE FOR VESSELS. IIMPROVED GAUGE., scientific american, 1877-06-30

AKEs 14 INVESTIGATION THE BEST SAFE LONDON. ENGLAND. BRICK MACHINES With AUTOMATIC CUTTING TABLES Prom 10 to 100000 j EIGHT CLAY TILE MACHINES JOHN P. LOVELL ARMS CO. 147 Washington Street BOSTON MASS. Ums IMOENSIGEW. NATIONAL FILTER C1M $90.C1C0.

Personal A College Chartered Under State ing Personal Magnetism and Hypnotism by Correspond ence. fverybody May Now Learn Ten Thousand Copies of a Valu able Work on These Sciences to be Given Away to Adver tise the College. ODINIGRAPII?'.1;gZFI

THE TENNESSEE CENTENNIAL EXPOSITION. PARTHENON FROM COLONNADE. COMMERCE BUILDING FROM LAKE. AUDITORIUM., scientific american, 1897-01-16

STEAMPACKING Boiler Coverings Millboard Roofing Building Felt Liquid Paints etc. MILLERS Charter Gas and Gasoline Engine 'Magnolia' BEST ANTI FRICTION METAL MAGNOLIA METAL CO. SO SIMPLE A CHILD CAN USE THEM SUNART SUNART PHOTO CO. Tools For All

NEW TURKISH IRONCLAD. Investigations on the Gastric Juice. The Nebulse—What are They? so. Cutting Down Trees by Electricity. Propagation of Heat. THE TURKISH IRONCLAD HAILIDIEH., scientific american, 1877-06-16

scientific american, 1906-06-09

Week Ending September 27 1890. PAGE AN EVENING ELECTRICAL SCHOOL. TESTING ARMOR PLATES FOR OUR WAR VESSELS. Dancing to Music from Afar OM Waste of Water. ST.A.131ISTAMIT) 1845., scientific american, 1890-09-27

INDEX OF INVENTIONS Letters Patent of the United States were Granted in the Week Ending June 10 1879 AND EACH BEARING THAT DATE. English Patents Issued to Americans., scientific american, 1879-07-19

Water & Ammonia are best and chealsest DELANEY'S Flanges make everlasting joints. IL J. Delaney & Co. Mfrs. motors already in use. Received awards at all Expositions. Motors of from 3k to 30 h. p. ready for delivery Chicag Section F No. 1526.

scientific american, 1868-05-11

RECENT INVENTIONS. Improved Pulley. Apparatus for Measuring and Cutting Out Garments. Check Row Corn Planter. Blacking Attachment for Shoe Brushes. Society of Arts Prizes. Animals and Men Who Never See Daylight. Plant Labels. International Electric

MAY 2 1891. Replies to Enquiries. TO INVENTORS. INDEX OF INVENTIONS United States were Granted April 21 1891 AND EACH BEARING THAT DATE., scientific american, 1891-05-02

THE CHROMO-CAMERA., scientific american, 1899-05-27

'Little Skipper' Marine Engine Engine with complete boat fittings and accessories $39 Makes a real speedy little launch from an ordinary canoe or rowboat The only Engine made that will run equally well on GASOLINE KEROSENE BLUE BLAZE DISTILLATE OIL

Xuointo and Xtroonal., scientific american, 1874-01-10

4121. A Scientific Toy. Preservation of Oilcloths., scientific american, 1868-07-22

MERIC 18 CENTS A COPY L $3.00 A YEAR., scientific american, 1904-12-10

296 Kelley's Water Wheel Governor. Obituary. Improved Miter Box. MO 4212 Pisciculture. Iron at Paris. KELLEY'S WATER WHEEL GOVERNOR. LANGDON'S MITER BOX., scientific american, 1867-05-11

WHISTLE TORNADO TOP SERVICE EXAMINATIONS are than 6000 appointments will be made NATIONAL CORRESPONDENCE INSTITUTE WASHINGTON D. C. THE SCIENTIFIC AMERICAN 12500 RECEIPTS. 708 PAGES. Morocc Postpaid. X-Ray effects shown without ClIBORUNDUMTwelfth

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