How Los Angeles is helping the man who is unable to help himself

when in court

Mapping Mountains and Swamps in the Wilderness

A. M. L. Phillips

danger involved in

This article gives a

Modern life is tending constantly to digest and simplify the many

complexities in society. A move in this evolution toward more

direct methods is the one described here

Mining a Mountain of Gold

New methods that have opened up a huge ridge composed almost

entirely of ore

Gauging the Minds of the Blind

202

W. S. Lockwood

Arnold E. Cornell

The story of how one afflicted man is helping others in the same

condition to a better and richer life

Dissecting Flowers with the X-Ray

A new invention enables botanists to probe into the living flower

with this wonderful new weapon of science

Luxuries for the Lumberjack

214

Bland Edwards

. 218

I. Newton Greene

A western company decided to try the experiment of treating its

lumbermen as human beings. The result of the attempt is told here

How the carriers have found a friend in an unexpected place

Home Rule for American Cities

Story of the movement that is sweeping the country

Blowing off Steam

The best humor found in our contemporaries

Deadening Your Neighbor's Noise

How a new invention promises to make apartment-house life more

endurable

Geor Holmes

234

. 238

Arthur Simmons

240

Our Twelve Great Scientists-XII-Dr. William H. Welch

Technical World Magazine should be on the news stands on the 17th of the month preceding the date of issue. If unable to get

the magazine on the 17th you will confer a favor by notifying the Circulation Manager. News-stand patrons should instruct their News-

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Photographs that show we are ready to take a hand in the affairs

of our distracted neighbor

Throwing Bombs into Science

Martin D. Stevers

A series of revolutionary discoveries that heralded the turn of

the century and are reshaping the entire trend of scientific thought.

Breaking Open the Dardanelles

Photographs of one of the most daring and stupendous naval opera-

tions in all history

Mechanical Dog Does Housework

Curious scien ific toy that has unlimited possibilities for household

utility

Learning Germany's Chemical Secrets

Philip G. Moses

. 299

Charles W. Person

How American industry has recently been freed from its dependence

upon Germany for certain chemicals, by a young American scientist

Surprises for Come-Back Congressmen

. 302

Wilbur Hampton

Many of the men who are returning to the places from which they
were ousted will be startled to see the revolutionary changes that
have been made

Taking $9000 from Twenty Acres .

310

I. Newton Greene

Two plucky young men have combined their brains with Western

dirt, and are deriving a fortune as a result

Medals for the Nation's Heroes

The puzzling question of why men are heroes is disclosed in the in-

vestigations made by the Carnegie Commission before making awards

Financing a Railroad with Nerve

This was done by a Westerner who was worthy of earlier days .

Making the Slippery Eel Profitable

New England thrift produces a nice little business that runs itself

College for Dog Sleuths

Dog detectives are given a thorough course designed to equip them
with a scientific knowledge of their work before going out

Graphophone Teaches Safety Hints

Hitching Cuba to the Mainland

Charles Frederick Carter

The way in which railroad genius has practically bridged the

Straits of Florida

Mechanical Percherons

The motor truck did not succeed in displacing the horse, for many

types of work, until these new machines appeared

Phoning from Flying Trains

An achievement which gives promise that man may telephone to

anyone from a speeding railway coach

Diving Under an Ice-Covered River

Only the direst necessity would cause a man to take the risks in-

volved in such an act

Millionaires as "Movie" Supes

Rich folk are doing the work in earnest

Fooling the Passport Faker

. 337

H. K. Hamilton

340

Irving E. Crump

Francis J. Dickie

Precautions taken by the United States to prevent misuse of Ameri-

can citizenship papers in Europe

German inventive genius reduces the loss of life in a novel way

Diking Off a Hungry Glacier

An incident in the battle being waged against the destructive forces

of Nature

Adding Buffalo Traits to Beef.

Science produces a new animal that promises to utilize the arid lands

of the West

Amusements for Those "Out of It"-Photographs

How prisoners of war, and the wounded, while away their time

Makers of War Horrors-Photographs

Ingenious devices that man has created to facilitate the slaughter of

his fellow men

Made by Our Readers

Forty-five dollars to ten prize winners

How an ingenious railway placated an aroused public by mitigating

the smoke nuisance

Blowing off Steam

Best humor found in our contemporaries

Technical World Magazine should be on the news stands on the 17th of the month preceding the date of issue.

If unable to get

the magazine on the 17th you will confer a favor by notifying the Circulation Manager. News-stand patrons should instruct their News-
dealer to reserve their copy of Technical World, otherwise they are likely to find the magazine "sold out".

TERMS: $1.50 a year; 75 cents for six months; 15 cents a copy. Foreign postage, 75 cents additional; Canadian postage. 25 cents

additional. Notice of change of address should be given thirty days in advance to avoid missing a number.

Technical World Magazine

Contents for June, 1915

The Volcano That Fought for the Nation

Many people are surprised to learn that the real defenses of our

Pacific Coast cities lie thousands of miles over the ocean to the west-

ward. The keystone of this distant system, and how it operates,

is herewith described

Why You Are Rich or Poor.

Merwin Delaway

424

Martin D. Stevers

Instead of the thousand and one usual explanations offered for this

problem, we present herewith some really fruitful suggestions that

will afford genuine help to anyone who is anxious to get ahead

Men Who Probe the Infinite

William T. Walsh

A few devoted scientists, who spend their lives in work that yields
no money or results of material value, do not see how their chosen
occupation involves the great romance portrayed in this article

Our First Submarine Loss

Pictures of the significant and tragic loss of the F-4, which brought

sorrow not only because of the brave men who died, but because,

until it happened, the United States was distinguished from other

powers in that it had lost no submarine craft

Fifty Shops Given to Clerks .

A striking example of the sort of practical philanthropy that bene-

fits the recipient and the community, is this magnificent gift valued at

half a million dollars, which was made to his employes by a

New Orleans business man

Actors in the Great War Drama

Men and machines that are taking prominent parts in the shifting

scenes of the great struggle

Squeezing Gasoline from Gas

For many years, untold millions have been thrown away because

the process here described was not known

To Turn New York into a Forest

Why and how efforts are now being made to change the greater

part of this State into densely wooded country

Real Color Photography at Last

Harry H. Dunn

George Frank Wörts

A new process perfected by the father of color-printing methods, that
solves the problem of taking colored pictures, is here described

Concrete Sea-Wall Battered Down

Where Nature once more taught man that he is not supreme

Picturing the Silkworm at Work

459

Charles Alma Byers

How scientists and anaesthetics played a part in procuring films

which show this unique feature of animal life

Wins Wealth with a Hose

461

Hanby Carver

468

George B. Dolliver

A single stream of water that in two years created a fortune for a

plucky engineer.

471

The reason why the most expensive substance on earth has been

enlisted in the fight for more and better crops

Scenery to Order .

Charles W. Meighan

An unusual case where a "soulless corporation" enhanced rather

than destroyed the natural grandeur of the canyon in which it set

up its power plant

The Bad Man of the Movies .

How a certain actor amassed a fortune by appealing to an obscure

but powerful trait in American character

Watching the Auto Grow Up

Tendencies that are influencing designers and buyers, and shaping

the automobile of the future.

The Machine That Thinks

This marvelous device surpasses all other so-called "thinking

machines", because it really possesses features characteristic of the

human intellect .

Railroad Taps Death Valley

Burton Anderson

498

An engineering feat that robs the most deadly spot on the North
American continent of its terrors

How the despised "porker" disproved the pet theories of scientists

when he was given a chance to show what he could do for himself .

Sticks for Train Orders.

. 501

Von Clayton Miner

The old Grecian method of handing a staff, or reed, from runner

to runner, has been adopted for controlling traffic movements on a

great railroad

A Few Episodes

Unique and startling ways in which members of the various armed

forces of Europe are risking their lives, shown in photographs

Made by Our Readers

Twenty-five dollars distributed among seven prize winners

Banishing the Lockjaw Horror .

How the Great War gave an American scientist an opportunity to

rob this most gruesome disease of its terrors

To Help the Weather Man Guess Better

A new device that warrants us in expecting better guesses in the

future.

Technical World Magazine should be on the news stands on the 17th of the month preceding the date of issue. If unable to get
the magazine on the 17th you will confer a favor by notifying the Circulation Manager. News-stand patrons should instruct their News-
dealer to reserve their copy of Technical World, otherwise they are likely to find the magazine "sold out".

TERMS: $1.50 a year; 75 cents for six months; 15 cents a copy. Foreign postage. 75 cents additional; Canadian postage, 25 cents
additional. Notice of change of address should be given thirty days in advance to avoid missing a number.