The various "Ages" in civilization.--Ancient knowledge of the
metals.--The invention and use of Bronze.--What Steel is.--The
"Lost Arts."--Metallurgy and chemistry.--Oriental Steel.--Modern
definition of Steel.--Invention of Cast Steel.--First iron-ore
discoveries in America.--First American Iron-works.--Early
methods without steam.--First American casting.--Effect of iron
industry upon independence.--Water-power.--The trip-hammer.--The
steam-hammer of Nasmyth.--Machine-tools and their
effects.--First rolling-mill.--Product of the iron industry in
1840-50.--The modern nail, and how it came.--Effect of iron upon
architecture.--The "Sky-Scraper."--Gas as fuel in iron
manufactures.--The Steel of the present.--The invention of
Kelley.--The Bessemer process.--The "Converter."--Present
product of Steel.--The Steel-mill.

[THE STORY OF ELECTRICITY.]

The oldest and the youngest of the sciences.--Origin of the
name.--Ancient ideas of Electricity.--Later experiments.--Crude
notions and wrong conclusions.--First Electric
Machine.--Frictional Electricity.--The Leyden Jar.--Extreme
ideas and Fakerism.--Franklin, his new ideas and their
reception.--Franklin's Kite.--The Man Franklin.--Experiments
after Franklin, leading to our present modern uses.--Galvani and
his discovery.--Volta, and the first "Battery."--How a battery
acts.--The laws of Electricity, and how they were
discovered.--Induction, and its discoverer.--The line at which
modern Electricity begins.--Magnetism and Electricity.--The
Electro-Magnet.--The Molecular theory.--Faraday, and his Law of
Magnetic Force.

[MODERN ELECTRICITY.]

CHAPTER I. The Four great qualities of Electricity which make
its modern uses possible.--The universal wire.--Conductors and
non conductors.--Electricity an exception in the ordinary Laws
of Nature.--A dual nature: "Positive" and "Negative."--All
modern uses come under the law of Induction.--Some of the laws
of this induction.--Magnets and Magnetism.--Relationship between
the two.--Magnetic "poles."--Practical explanation of the action
of induction.--The Induction Coil.--Dynamic and Static
Electricity.--The Electric Telegraph.--First attempts.--Morse,
and his beginnings.--The first Telegraph Line.--Vail, and the
invention of the dot-and-dash alphabet.--The old instruments and
the new.--The final simplicity of the telegraph.

CHAPTER II. The Ocean Cable.--Differences between land lines and
cables.--The story of the first cable.--Field and his final
success.--The Telephone.--Early attempts.--Description of Bell's
invention.--The Telautograph.--Early attempts and the idea upon
which they were based.--Description of Gray's invention.--How a
Telautograph may be made mechanically.

CHAPTER III. The Electric Light.--Causes of heat and light in
the conductor of a current.--The first Electric Light.--The Arc
Light, and how constructed.--The Incandescent.--The
Dynamo.--Date of the invention.--Successive steps.--Faraday the
discoverer of its principle.--Pixü's
machine.--Pacinatti.--Wilde.--Siemens' and Wheatstone.--The
Motor.--How the Dynamo and Motor came to be coupled.--Review of
first attempts.--Kidder's battery.--Page's machine.--Electric
Railroads.--Electrolysis.--General facts.--Electrical
Measurements.--"Death Current."--Instruments of
Measurement.--Electricity as an Industry.--Medical
Electricity.--Incomplete possibilities.--What the "Storage
Battery" is.

CHAPTER IV. Electrical Invention in the United States.--Review
of the careers of Franklin, Morse, Field, Edison and
others.--Some of the surprising applications of
Electricity.--The Range-Finder.--Cooking and heating by
Electricity.

[THE STORY OF STEAM]

That which was utterly unknown to the most splendid civilizations of the past is in our time the chief power of civilization, daily engaged in making that history of a new era that is yet to be written in words. It has been demonstrated long since that men's lives are to be influenced not by theory, or belief, or argument and reason, so much as by that course of daily life which is not attempted to be governed by argument and reason, but by great physical facts like steam, electricity and machinery in their present applications.