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all power purposes. High Class Hydro Carbon Motors R D L HOLDT.' 1 SIC FIRST PAr E SLIER Trr IC ;AMERICAN SIM 2.132% Now is the time to subscribe to the SCIENTIFIC AMERICAN for the year 1902 Subscription Price$3 a Year Inqu Inquiry No. 1717.-For

ENGINEERING INVENTIONS. AGRICULTURAL INVENTIONS. MISCELLANEOUS INVENTIONS. Speciai. A CRUEL OLD MONSTER., scientific american, 1888-04-11

fes No. 361 BROADWAY NEW YORK. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific America's Supplement Building Edition. THE ARCHITECTS AND BUILDERS EDITION OF THE SCIENTIFIC AMER Spanish Edition of the Scientific American. Contents. TABLE OF CONTENTS

MINAS CROSS SECTION OF THE STREET AT BROADWAY AND FULTON STREET ers thoroughly., scientific american, 1891-05-16

on the 15th: of May. Those who wish to exhi bit models machinery &o. of mechanical skill and those who would like to carry on permanently any mechanical occupation that would be in any way cu rious or attractive to visitors are requested to call on

Strong simple and durable. Any mechanic can Operate them easily. Send for catalog. Machines THE'BEST'LIGHT Chstshirses the Sur. ined tested and permitted by underwriters' association. CATALOG FREE. THE BEST LIGHT COMPANY ARC 5.000.3 50 Years'

Coal for Fuel In Western Steamboats. Man's Friends. The Past and the Present. Thrashing by Music. Cunning of the Pox. A Hanging Bridge. Gases. Watch Chain. Beautiful Ornithological Display., scientific american, 1848-07-15

367 VALUABLE WORK FOR INVENTORS PATENTEES AND MANUFACTURERS., scientific american, 1864-06-04

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. $3 per Annum. Vol. XX1V.--No. 10. Improved Balanced Slide Valve. Curious Case cot Asymmetry. COLLIER & IdASTERMAN'S BALANCED SLIDE VALVE. Kitchen Boilers.,

A Yucatan Exhibit at the Fair. Borings in Broadway New York. FOUNTAIN OF SAINT GEORGE AND THE DRAGON VIENNA BY ANTON DOEINIK BITTER VON FERNICORN. FOUNTAIN OF SAINT GEORGE, scientific american, 1893-04-08

Detection of Radio-active Substances. Waterline leng WOODEN T RAINING BRIG 'BOXER' LAUNCHED AT NAVY YARD PORTSMOUTH., scientific american, 1904-10-22

POSTAGE STAMP INVENTIONS. THE BORAX MINES OF NEVADAA VALUABLE DISCOVERY. PROTECTED WORKING MEN. NOTES OF PATENT OFFICE DECISIONS., scientific american, 1877-10-20

scientific american, 1864-06-11

and flue running lengthwise through it to a draught chimney in the rear. This vat is fed by a continuous stream of brine falling directly upon the furnace therein to which it is limited until it boils to nearly the point of crystallization; it then

A CURIOUS CASE OF REGELATION. A CURIOUS ICE FORMATION. CROSS-SECTION OF STEEL ROADWAY. THE ORANGE IN NORTHERN CALIFORNIA. APPEARANCE OF STEEL ROADWAY IN MURRAY STREET NEW YORK., scientific american, 1903-02-21

The Priority of Chinese Inventions. To Keep Iron Pipes from Busting. Business Success. 4 0. Need for Improved Post Office Service. The Canal of Joseph. The French Exposition. 4 The best builders keep on file the Archi tects and Builders Edition of

The Bois tParc or Osage Orange. The ScienceON THE PSYCHIC FORCE. Boiler Tenders. M. Constant Say. FAIR OF THE AMERICAN INSTITUTE. Wringing Machine for Knit Tubular Goods., scientific american, 1871-09-23

A Great Railroad Feat. N.40. Spindles for Loom-Shuttles. The Flux Motor of Signor Tommasi. HYDRAULIC BUFFER FOR CHECKING THE RECOIL OF EAVY GUNS., scientific american, 1871-08-19

MARCH 25 1871. BAIRD'S JUST PUBLISHED. THE POCKET COMPANION By FRANK W. VODGES Architect. Catalogue of Practical and Scientific Books HENRY CAREY BAIRD 406 Walnut St. Philadelphia Pa. Bare and Beautiful Flowers Can always be obtained by Sowing B. K.

Week Ending December 24 1892. PAGE PROGRESS OF OUR NAVY. THE USE OF PHOTOGRAPHY IN PHYSICAL RESEARCH., scientific american, 1892-12-24

THE NEW EXPLOSIVE DITALIN. THE CULTIVATION OF TIMBER. THE LAW OF 'VIII VIVA.' P. A PLEA FOR THE SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS., scientific american, 1870-03-05

COLLISION WITH AN ICEBERG. BY JAMES MURRAY EX-M.B.A. STEAMER CONCORDIA INJURED BY COLLISION WITH AN ICEBERG. The Ashmolean Museum Struck by Lightning. TABLE ICEBERGS ENTRANCE TO NARROWS ST. JOHN'S NEWFOUNDLAND., scientific american, 96-09-12

L S CENTS A COPY. Casting Blank Records. Making Band Records. Turning the Blanks Making Violin Solo Records., scientific american, 1900-12-22

AUGUST 31 1872. 18000 Blows a Minute NEW BOOKS AND PUBLICATIONS., scientific american, 1872-08-31

MANUFACTURE OF RUBBER SHOES. inch in thick after a thorough inspection are carefully boxed and MANUFACTURE OF RUBBER SHOES., scientific american, 1892-12-10

91.00 a line. Inutile Page75 cents a line. SCALE IN STEAM BOILERS Improving the Harbor of San Francisco. WATERWHEEL SCHEDULE OF PATENT FEES Row Can I Best Secure My Invention? Preliminary Examination. Reissues. Caveats. Design Patents. Trademarks.

$5.00 Water Motor $3.50 Valuable Volumes Electricians' Handy Book. 768 Pages. Nearly 600 Illustrations. Handsomely Bound in Red Leather with Title and Edges in Gold. Price 63.50 . Practical Work for Practical Men. Gas Engines and Producer Gas Plants.

Blockade of the Underground Trolley Line on Lenox Avenue. of ice forming on the wires is not unusual with the Traps for Inventors. the kind for this purpose.' Do Not Lose or Throw Away Your Papers. The Value of Good Roads. AMERICAN?, scientific

Some Medico-Legal Points in Regard t Malpractice. 199 Miles in 175 Minutes. Calculated Power of Lightning., scientific american, 1895-10-19

REMARKABLE RESULTS OF EVAPORATION AND RAINFALL. A Time Ball in New York City. Business Stagnation in Germany., scientific american, 1877-04-28

LUNN dt COMPANY Editors and Proprietors. PUBLISHED WEEKLY 0. D. MUNN B. H. WALES A. E. BEACH. THE DEFENSEOF OUR HARBOR—PROMPT ACTION NEEDED. DEATH OF SAMUEL COLT THE INVENTOR. TRIAL OF WARLIKE INVENTIONS., scientific american, 1862-01-25

SIR HARRY JOHNSTON'S EXPLORATIONS IN UGANDA AND CENTRAL AFRICA. BY THE LONDON CORRESPONDENT OF THE SCIENTIFIC AMERICAN. SCIENCE NOTES. THE RAISING OF A BIG RAILWAY BRIDGE., 1903-01-17

New Electrical and Other Experiments. A Wonder in Weaving. Tests for Impurities in Gas. Manufacture of Alum--A New Method. Mountain Sickness. Aymara Indians in Peru. Pawnbroking in Paris During the Siege., scientific american, 1871-04-15

scientific american, 1864-06-25

In Midair. Soaring. SOME AERONAUTICAL EXPERIMENTS. A Bottom View. by the use of a front rudder and the operators Alloys for Brass and Bronze. hard and rigid to soft and to some extent elastic and separated and crystallized in masses by themselves. k

scientific american, 1867-08-10

No. 301 BROADWAY NEW YORK. TERMS FOR THE SCIENTIFIC AMERICAN. The Scientific American Supplement Scientific American Export Edition. REMOVAL. Contents. 430 For the Week ending April 12 18S4. PAGE PATENTS IN CONGRESS., 1884-04-12

4 Joining Together of Glass Tubes. Strawberries and Garden Truck by the Barrel. Interesting Ring Trick. Fish Plagues in the Gulf of Mexico. Influence of Minute Traces of impurities on the Properties of Metals. Pin Manufacture., scientific american,

World's Fair Medal awarded machine and attach ments. Buy from factory and save dealer's and agent's motto. i SAFETY THRUST COLLARS TYPEWRITERS. EXCHANGE CHICAGO AUT. REGISTER Co. 154 MONROE STREET CHICAG EVERY STOREKEEPER AND ADVICE T PATENTS X THE

scientific american, 1872-04-13

ASSAYING., scientific american, 1881-05-28

The Migration of Locusts. Action of Ice in Rivers. The Zickler Wireless Telegraphy. The Sixth Annual Reception of the New York Academy of Sciences. Fire Precautions in Paris. '0 1The Manila Refrigerating Plant., scientific american, 1899-04-29

whom further information can be obtained. formerly—on account of the war. Is it so ? CARRART'S PATENT CULTIVATOR., scientific american, 1863-05-02

THE SCIENTIFIC AMERICAN. 307 FOREIGN SUMMARY-NEWS AND MARKETS., 1859-11-05

CALEDONIA Livingston Co. N. Y„ U. S.A. WE UNDERSELL ALL! Bicycle Electric Lights . . .00 OHIO ELECTRIC WORKS. Cleveland Ohio. MUNN & CO. 361 BROADWAY. NEW YORK FLEER'S UDY1HOME BY OUR EFFICIENT CORRESPONDENCE METHOD BRASS BAND ROTARY ENGINES.

MISCELLANEOUS INVENTIONS. IMPROVEMENT IN RAILWAY SWITCHES AND CROSSINGS. STREET RAILWAY SWITCH.STEAM RAILWAY SWITCH., scientific american, 1880-10-02

scientific american, 1862-03-29

RECENTLY PATENTED INVENTIONS. Agricultural Machinery. Electrical Contrivances. Mechanical Devices. sary to Hive the number of the inquiry. MUNN dz CO. Notes and Queries. INDEX OF INVENTIONS J. Haley7159, scientific american, 1902-10-25

The Smokometer. Three Hundred Miles of 0 Pipes. A Word to Apprentices. New and Remarkable Cannon. Church Clocks and Chimes., scientific american, 1873-10-04

Improved Railroad Rail Joint with Nut Locking Chair. COMBINED SADIRON AND STAND AND COMBINED REVERSIBLE SADIRON AND POLISHING IRON. Breeding Silkworms. Plants in Bedrooms. BAYLEY'S RAILROAD RAIL JOINT WITH NUT LOCKING CHAIR., scientific american,

THE RUSSIAN CIRCULAR IRONCLAD ' POPOITKA NOVGOROD, scientific american, 1875-08-07

scientific american, 1906-06-09

SCIENTIFIC AMERICAN ESTABLISHED 1845 No. 361 Broadway New York COLLAPSE OF THE GREAT SALT LAKE RAILROAD TRESTLE. THE EXTERMINATION OF THE MOSQUITO ON LONG ISLAND., 1903-04-25

Inexpensive Classified Advertisements SALE AND EXCHANGE. BUSINESS OPPORTUNITIES. HELP WANTED. PARTNERS WANTED. POSITION WANTED. SITUATIONS AND PROFESSIONAL OPENINGS. HOTELS AND RESORTS. $300000000 a Year Spent by Americans for Cigars HOW YOU CAN GET

CET THE BEST AND CHEAPEST PERIN BAND SAW BLADES INERAL WOOL. 212 CORTLANDT sTREET N. Y. NEWSPAPER FILE DIIIll & CO. Electric Light and Power. Power CAS ENCINE. STERLINC ILL. EBSTER'S Invaluable In every &hoot and at every Fireside. A Dictionary

Inventions Patented in England by Americans., scientific american, 1870-06-04

an DRILL CHUCK4 Back Page81.00 a line. Inside Page 75 cents a line. Al IESTOS CEMENT ASBESTOS BOILER FELTING H. W. JOHNS WIAMEN LANE NEW YORK AA WHITE JAPAN DRYER T U ADVERTISERS. RATES OF ADVERTISING: New York Newspaper Union List A. N. Kellogg's

Olives in California. MECHANICAL INVENTIONS. 1CHINESE PORCELAIN VASE. CHINESE PORCELAIN VASE. - 4Accident on Board the Greece. Phosphorescence in the Caribbean Sea. Astronomical Notes., scientific american, 1880-02-07

PITTSBURGH PENNSYLVANIA AJ ff& 'BO!ThENT MANUFACTURES, scientific american, 1874-12-12

AN IMPROVEMENT IN ICE-SKATES. A GIGANTIC ARTIFICIAL MOON. Cloth from Pineapple Fiber. Kitchen Bacteriology., scientific american, 1899-01-28

MISCELLANEOUS INVENTIONS. Cumberland Mountain Caves. Explosion in a Bessemer Shop. A NOVEL EXHIBITION. Progress in Railway Making. Impurities Contained in Glacial Acetic Acid. English Silk Mills to Remove to New Jersey., scientific american,

scientific american, 1866-09-11

Foot FREE TICKET Second Edition of Useful Hints Suggestions and Recipes FHB TRADE ENGINE. RODE M'F'S. CO. TO ELECTRO-PLATERS JEWELERS AND WATCHMAKERS. WM. E. HALE & CO. Crude Gutta Percha SHIN GLES HEADING AND STAVES. The Oldest Agency for Soliciting

forth. each other. having a suitable screw thread cut on it and a short spiral groove terminating In a radical cutting point on the end of the auger and a while the cutter on the end of the cylindrical screw portion serves to cut a hole corresponding

An iceberg that looks like a racing yacht under full sail. Greenland icebergs surrounded by Hoe ice. THE ICE OF THE ARCTIC WATERS., scientific american, -1909-03-27

Comparative Photographs of Blood. Musical Sand. Another Opportunity for Inventors. Microscopic Ruled Test Plates. Inventions Patented in England by Americans. NEW CHEMICAL AND MISCELLANEOUS INVENTIONS., scientific american, 1876-09-11

Building and Loan Associations. Bulcin. A Chu reit -Going Robin., scientific american, 1894-06-09

PROGRESS OF THE 20000-TON 'NORTH DAKOTA.' Death of William A. Austin. THE 'NORTH DAKOTA' 01JR FIRST 'DREADNOUGHT' SO PER CENT COMPLETED. ' I !II PP AFAO PAY SlariltAirtiffitak 1.0 IN' Dimension., scientific american, -1909-03-20

is THE SCIENTIFIC AMERICAN:, 1860-07-07

THE DAGUERRE MEMORIAL. Ramie for Silkworms. Electrical Railways. 4 yellow. THE MONUMENT TO DAGUERRE RECENTLY INAUGURATED AT WASHINGTON., scientific american, 1890-10-18

AN IMPROVED FOUNTAIN PEN. AN IMPROVED FOUNTAIN PEN. SOME NOVEL TYPES OF SHAVING BRUSHES. HOLDER FOR BROOMS AND SIMILAR ARTICLES. HOLDER FOR BROOMS AND SIMILAR ARTICLES. Shoe Varnish. A Simple and Effective Method of Christen ing Umbrellas. Patent

Poisoned by Revenue Stamps. 4 THE GREENLAND WHALE AND THE GRAMPUS. The Human Voice a Corner Stone Memento. Artificial Formation of Felspars—Nepheline and Leucite. Ir VW' The Grape Rot. COMBAT BETWEEN THE GREENLAND WHALE AND GRAMPUSES. _,

HOISTING ENGINES FOR THE ANACONDA MINE. Railroad Progress. Paper Clothing. COMPOUND HOISTING ENGINES FOR THE ANACONDA MINE--HIGH PRESSURE CYLINDERS 26 INCHES DIAMETER; LOW PRESSURE CYLINDERS 46 INCHES DIAMETER; STROKE 72 INCHES., scientific

282 THE SCIENTIFIC AMERICAN. WIND WHEEL alcohol. The portion of the distillate which has passed MORTISING MACHINE. SMOOTHING MACHINE. inventor of this device is George Munger of New Haven Cons FOREIGN NEWS AND MARKETS. PLANING MACHINE. VALVE. TENSION

BY ROLAND ASHFORD PHILLIPS., scientific american, -1909-07-24

Improved Cask KINDLING WOOD SPLITTER. A Novel Problem. FOOT POWER BAND SAW. _Automatic Fire Alarms.)-4D-0 The Public Document. Acetate of Soda for Preserving Meat. SHOE STRETCHER., scientific american, 1873-02-08

Xzientifir Amnion. AN AUTOMATON TRANSIT OF VENUS. RECENT GEOGRAPHICAL NOTES. AUTOMATON TRANSIT OF VENUS —Fig. 3. CARELESS PLUMBING. A Tower Taller than Babel. Frigoritie Effects of Capillarity and Evaporation., scientific american, 1873-12-27

Protection from LightningA Note from Professor Macomber. Iron as a Fertilizer for Pear Trees. The Blake Transmitter. A String of Questions. A Small Steamboat., scientific american, 1879-11-22

BY EDWARD HALE BRUSH. delicate tones of ivory at varying hues. These light walls and red roofs with heavy foliage banked below MAKING WATER COLOR DRAWINGS AS GUIDES FOR PAINTING THE PAN-AMERICAN EXPOSITION BUILDINGS. GROUPING THE MODELS OF THE

A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES Improvement in 'Machinery for Getting Out Ship Timber. KNOWLTON'S PATENT CIRCULAR BEVEL SCROLL SAW. Coal Ashes as a Fertilizer., scientific american,

traffic and the consequence has been that the covered ways tdANUFAOTOSING MINING AND RAILROAD ITEMS., scientific american, 1868-07-01

SCIENCE AND THE PUBLIC HEALTH. THE REPTILES AT THE ZOOLOGICAL GARDENS., scientific american, 1870-01-22

Flat Metal Worker's Illstrutor. PATENTEES US'‘PIANOOMALY:$290.FORls:rCLASS7091 Armstrong etc Starr D. F. WELSH & CO. CONCORD WAGON AXLES 37 Park Row New York., scientific american, 1870-05-28

SPAIN A FIELD FOR MACHINERY AND PATENTS. PETER COOPER AS AN INVENTOR. -.-4 SO 41 Africa Crossed Again., scientific american, 1879-03-29

N. PLANTE'S THEORY OF THE FORMATION OF HAIL. forropontitact., scientific american, 1876-12-23

Circular Saws. Manufacture of White Lead at the West. Winds of the Northern Hemisphere. Curious Mountain in California. The Lost Marine Telegraph Cable. . Chancery and Jury Trials in Patent Cases. Treatment of Scarlet Fever. Draper's Mill-Stone

scientific american, 06-09-15

STROUDSBURG PA. EMERY WHEELS AND GRINDERS. JOSEPH C. TODD THE STANDARD AND ONLY RELIABLE PORTABLE ROOFING. Asbestos Liquid Paints Coatings Cements Boiler Coverings &c. H. W. JOHNS M'F'G- CO. 87 Maiden Lane New York. The STANDARD SCALES. World's Fair

A JOURNAL OF PRACTICAL INFORMATION IN ART SCIENCE MECHANICS AGRICULTURE CHEMISTRY AND MANUFACTURES. Biding United States Cannon. Cyanide of Potassium for Soldering. RIFLING CANNON. Machinery for Gun-Making., scientific american, 1861-08-24

ILLINOIS AND ST. LOUIS BRIDGE COMPANY—REPORT OF CAPT. JAMES B. EADS CHIEF ENGINEER. 40 ARTESIAN WELLS. SCIENTIFIC ADMINISTRATION., scientific american, 1870-12-17

luterican. A Marble Boring Sponge. TEE COMMON JACANA. JACANA. Natural HistoryThe Cope Collection. PARIS EXHIBITION.-FAOADE OF AUSTRIA AND HUNGARY ', scientific american, 1878-12-07

scientific american, 1884-12-06

MAY 12 1894 THE BICYCLE UPON RAILS. 4 t THEODOR BILLROTH. THEODOR BILLROTH. .BICYCLE FOR THE INSPECTION OF RAILWAY TRACKS., scientific american, 1894-05-12

Events of the Week. The London Illustrated Dews and the Scientific American. The Lords_ are Coming., 1853-05-21

scientific american, 1861-09-21

scientific american, 1862-01-11

FASTENED FISK RUBBER. COMPANY Trade All Sizes 3 Send Postal for 10e. extra for Mailing Illustrated Booklet Each Three Pairs Men's Women's and Children's ORDER BY MAIL Never Surrender Hosiery BARNARD SUMNER dk PUTNAM CO. Worcester Mass., scientific

PHOTOGRAPHIC NOTES. How the New Mexicans Capture Ants. Importation of Carriages by Americans., scientific american, 86-03-13

RECENTLY PATENTED INVENTIONS. Agricultural. Designs. NEW BOOKS AND PUBLICATIONS BUILDING EDITION. allied subjects. of any Architectural PutlicatIon in the world. Sold by all newelealers. tIN & CO. PLUMMIE3 , scientific american, 1893-07-11

Sugar from Coal Tar. A SIMPLE AND POWERFUL STUMP PULLER. Sick Headache. IHuman Bite. DIODER N MILITARY APPLIANCES—FIELD SIGNAL S TATION. TELE IOIIN CORNELIUS GRUB AND STUMP PULLER., scientific american, 1888-04-21

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