SCIENTIFIC AMERICAN SUPPLEMENT NO. 481

NEW YORK, MARCH 21, 1885

Scientific American Supplement. Vol. XIX, No. 481.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.


TABLE OF CONTENTS.
I.[ENGINEERING AND MECHANICS.—The RighiRailroad.—With 3 engravings.]
[The Chinese Pump.—1 figure.]
[The Water Clock.—3 figures.]
[New Self-propelling and Steering Torpedoes.]
[Dobson and Barbour's Improvements in Heilmann'sCombers.—1 figure.]
[Machine for Polishing Boots and Shoes.]
II.[TECHNOLOGY.—The Use of Gas in theWorkshop.—By T. FLETCHER.—Placing of lights.—Bestburners.—Light lost by shades.—Use of theblowpipe.—Gas furnaces.—Gas engines.]
[The Gas Meter.—3 figures.]
[The Municipal School for Instruction inWatchmaking at Geneva.—1 engraving.]
III.[ELECTRICITY, ETC.—Personal Safety with theElectric Currents.]
[A Visit to Canada and the United States; or,Electricity in America in 1884.—By W.H. PREECE.]
IV.[ARCHITECTURE.—The House of a ThousandTerrors, Rotterdam.—With engraving.]
V.[GEOLOGY.—On the Origin and Structure ofCoal,—With full page of illustrations.]
VI.[POLITICAL ECONOMY.—Labor and Wages inAmerica.—By D. PIDGEON.—Who and what are theoperatives.—Native labor.—Alien employes.—Housingof labor.—Sobriety.—Pauperism.—Artisans'homes.—Interest of employer in the condition of hisemployes.—Wages in Europe and America.—Expenditures ofworkingmen.—Free trade and protection.]
VII.[MISCELLANEOUS.—Ice Boat Races on theMueggelsee, near Berlin.—With engraving.]
VIII.[BIOGRAPHY.—DUPUY DE LOME—Withportrait.]