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Earthwork, for Setting out Curves, and for various Calculations,
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_Health and Comfort in House Building, or Ventilation with Warm Air by Self-Acting Suction Power_, with Review of the mode of Calculating the Draught in Hot-Air Flues, and with some actual Experiments. By J. DRYSDALE, M.D., and J. W. HAYWARD, M.D. Second edition, with Supplement, _with plates_, demy 8vo, cloth, 7_s._ 6_d._

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Definitions of Words and Terms used in Watchwork--Tools--Time--
Historical Summary--On Calculations of the Numbers for Wheels
and Pinions; their Proportional Sizes, Trains, etc.--Of Dial
Wheels, or Motion Work--Length of Time of Going without Winding
up--The Verge--The Horizontal--The Duplex--The Lever--The
Chronometer--Repeating Watches--Keyless Watches--The Pendulum,
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Symbols and the Signs of Operation--The Equation and the Unknown
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and Proportionate Parts--Transformation of System of Logarithms--
Common Uses of Common Logarithms--Compound Multiplication and
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_Proceedings of the National Conference of Electricians, Philadelphia_, October 8th to 13th, 1884. 18mo, cloth, 3_s._

_Dynamo-Electricity_, its Generation, Application, Transmission, Storage, and Measurement. By G. B. PRESCOTT. _With 545 illustrations._ 8vo, cloth, 1_l._ 1_s._

_Domestic Electricity for Amateurs._ Translated from the French of E. HOSPITALIER, Editor of "L'Electricien," by C. J. WHARTON, Assoc. Soc. Tel. Eng. _Numerous illustrations._ Demy 8vo, cloth, 9_s._

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1. Production of the Electric Current--2. Electric Bells--
3. Automatic Alarms--4. Domestic Telephones--5. Electric Clocks--
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Application of the Electric Light--9. Electric Motors--
10. Electrical Locomotion--11. Electrotyping, Plating, and
Gilding--12. Electric Recreations--13. Various applications--
Workshop of the Electrician.

_Wrinkles in Electric Lighting._ By VINCENT STEPHEN. _With illustrations._ 18mo, cloth, 2_s._ 6_d._

CONTENTS:

1. The Electric Current and its production by Chemical means--
2. Production of Electric Currents by Mechanical means--
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Acidimetry and Alkalimetry.
Albumen.
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Alkaloids.
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Bitters.
Bleaching.
Boiler Incrustations.
Cements and Lutes.
Cleansing.
Confectionery.
Copying.
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Dyeing, Staining, and Colouring.
Essences.
Extracts.
Fireproofing.
Gelatine, Glue, and Size.
Glycerine.
Gut.
Hydrogen peroxide.
Ink.
Iodine.
Iodoform.
Isinglass.
Ivory substitutes.
Leather.
Luminous bodies.
Magnesia.
Matches.
Paper.
Parchment.
Perchloric acid.
Potassium oxalate.
Preserving.

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SYNOPSIS OF CONTENTS.

Alloys.
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Antimony.
Barium.
Beryllium.
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Cadmium.
Caeesium.
Calcium.
Cerium.
Chromium.
Cobalt.
Copper.
Didymium.
Electrics.
Enamels and Glazes.
Erbium.
Gallium.
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Gold.
Indium.
Iridium.
Iron and Steel.
Lacquers and Lacquering.
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Lead.
Lithium.
Lubricants.
Magnesium.
Manganese.
Mercury.
Mica.
Molybdenum.
Nickel.
Niobium.
Osmium.
Palladium.
Platinum.
Potassium.
Rhodium.
Rubidium.
Ruthenium.
Selenium.
Silver.
Slag.
Sodium.
Strontium.
Tantalum.
Terbium.
Thallium.
Thorium.
Tin.
Titanium.
Tungsten.
Uranium.
Vanadium.
Yttrium.
Zinc.
Zirconium.

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Filtering--water, and solutions of various kinds.

Percolating and Macerating.

Electrotyping.

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End of Project Gutenberg's Wrinkles in Electric Lighting, by Vincent Stephen

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