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The Technical World Cerwiesiri is known by the company she


doesn't keep. Published Monthly by the

Habit may be a man's best friend or his

worst enemy. American School of Correspondence

( Expert testimony depends upon who em

ploys the expert. Armour Institute of Technology

( Nearly all commuters imagine Hades is a Chicago, Ill., U. S. A.

suburb of Heaven.

( A gentleman is a man who agrees with
KEMPSTER B. Miller, M. E.

you; a crank is one who doesn't.

( Love is a serious matter the first time a CARL S. Dow, S. B.

young man bumps into it.

C If the average girl doesn't play the harp SUBSCRIPTIONS

in the next world any better than she plays the

piano in this, there's going to be trouble. United States, Canada, and Mexico $2 per year Foreign Countries

$3 per year

If people would only give as much thought

to governing themselves as they do to the JRemit by Draft on Chicago, Express or Postoffice Money government of the nation, the welfare of all Order, payable to The TechNICAL WORLD.

would be assured. Subscriptions will begin with current issue. SChanges of address should reach the publishers two weeks in advance of date of issue.

Our Commercial Ad.

vance JEntered at the Postoffice, Chicago, Illinois, as secondclass mail matter.


1904, marks the best all-round busiAdvertising Rates on Application

ness year in the history of the United SCopy for Advertisements must be received by the 1st

States. The exports of American manuof the month.

factures were larger than in any preced

ing year, and the exports of domestic C Occasionally a man who runs for an office products exceeded those of any other wins in a walk.

country. This, in a single sentence, is C A brick manufacturer needs the earth in

the record of the year's commerce just his business.

announced by the Department of Com( Some society women have better clothes merce and Labor through the Bureau of than manners.

Statistics, Q If a man makes no enemies, he has but few The United Kingdom is, next to the friends.

United States, the world's largest ex( Intellectuality is the cause of baldness. So porter of domestic products, and, until says a baldheaded scientist.

within recent years, surpassed the United C A thousand-dollar boy with a ten-thousand States in its total. During the past few dollar education is over-capitalized.

years, however, the United States has ( Don't get gay. It is easier to keep the lid rapidly gained upon and finally overtaken on than it is to put it back on again.

the United Kingdom in the race for su( The next time Russia wants a war loan, she premacy as an exporter of domestic prodmight apply to the St. Louis hotel men.

ucts. The trouble with many a young man is that he spends his fortune before he makes it.

The Electrifying Proc( Sometimes a man loses his job because he doesn't know enough, and sometimes because

CSS he knows too much. & People often make the excuse that they THE RECENT DELIVERY to the

New York Central Railroad of seyhave bad memories, when the truth is, they

eral 85-ton electric locomotives capaare too slovenly to use their brains.

ble of hauling heavy trains at the rate of C One of the greatest mistakes that a man

75 miles an hour, for use on the 44-inile can make is to sit down at a desk and worry himself sick over business and then call it a

run between Croton and the Grand Cenday's work.

tral station in New York City, is the

practical answer to the old-time objec- tors, which, up to distances of 40 miles tion that the electric system was too or so, they certainly are. Thus the abcostly, and the perfection of the electric sorption movement is bound to continue, locomotive too remote, to constitute a and we may look for more and more practical commercial issue. Taken in consolidation until

time comes, conjunction with the proposed electric prophesied by the late Jay Gould, when equipment of the leased South Shore we shall be face to face with the problem line, which parallels the New York Cen whether the railways shall run the govtral to Buffalo, and the proposed creation ernment, or the government shall have of a gigantic system of trolley transporta to run the railways. The issues are tion throughout the State by the absorp serious, but not beyond the power of the tion of all electric roads that interfere American public to work out an intelliwith local traffic, in order to make them gent solution. feeders of the main line—an absorption already far advanced—this incident calls attention to one of the most significant Need of a Parcel Post developments of our industrial life today.

IN a All over the more populous parts of

four pounds may be sent by mail to this continent, the "electrifying" process

any part of the country for a postage of four cents.

To mail a similar package has, during the past five or six years, been working a revolution in the rela

in the United States would cost 64 cents. tions of men to one another. First Ohio,

A parcel may be mailed from England then Indiana, then Illinois and Iowa, and

to Canada for three-quarters the postage now New York, have been paralleling

it would cost to send the same parcel a their railroads with trolley lines. In the

dozen miles in this country. Middle States, perhaps, are found the

One of our greatest public needs is a largest contiguous reaches of fertile soil

parcel post. Education in Business, in in the world, which not only yield rich

discussing the subject says: “The imcrops at small cost of cultivation, but mense advantages of the parcel post syswhich are almost all underlain by coal or

tem—to which any well-informed travpetroleum within easy reach; and no

eler will bear witness-are being denied where are there fewer obstacles to line

us because of the power of the great priconstruction than on those prairies

vate corporations, the Express Compaeither in the way of physical difficulties, nies, in our legislative halls. or of indisposition to grant a right of way on the part of the intelligent farming

Amalgamated communities who will be served. In all cases these lines have developed, almost “WHEN ROGUES fall out, the devil from the start, a' paying business which

is to pay.” But then, it almost grows from year to year at a surprising seems, as Mr. Barnum once said, that rate; and—a feature even more remark the American people "like to be humable—the traffic on the steam lines has bugged," and it is an admitted fact that also increased. The trolleys, running at substantial and meritorious enterprises brief intervals from point to point, and will often "go begging" for the sinews of starting from the heart of the cities and

strength, while the wildest of wildcat towns, have simply created their own schemes—provided only they hold out business and set people moving about the promise of "easy money" and "big who otherwise would have remained as money”—have little difficulty in imposing inert as the proverbial snail.

themselves upon a confiding public. As these electric lines become con

Mr. Lawson's alleged "inside" history nected endwise in longer and longer of the Amalgamated Copper deal, to stretches, flouting the railroads every which he was himself a party, is—if it where, it is not to be wondered at if the be not to be taken with a grain of saltsteam companies should wish to have merely one more eye-opener to the meththem as feeders, rather than as competi ods of stock manipulation which in recent

years have made serious inroads upon the fect that the craving for alcoholic stimuhard-earned funds of small and sorrow lants is caused mainly by a derangeful investors. It is a common thing for ment of the intimate and delicate relastocks, based on properties of relatively tions of the optic nerve to the system. small or even of no value, to be offered Of course it is only natural to smile at to the public as safe and profitable in such an idea, and whisper softly “crank.” vestments, and to be sold at enormous In view of the fact, however, that medical profit for the promoters at the expense specialists often put eyeglasses on their of the sanguine investor who is allured patients to cure headaches and nervous by the Vidas touch of the "most honor dyspepsia, it would seem well to reserve able men” on the directorate. This our decision. An editorial discussing method of getting other people's money Dr. Prentice's paper, says: “If we once is more respectable than asking them for concede that a failure of the eyes to it on a dark night at a pistol's point. It ‘focus' properly upon an object produces is also far safer, for it seems to be cov a nervous irritation which in turn proered within the law. But does it not seem duces an abnormal appetite, and that the rather anomalous to send to jail a “bunco patient acquires the habit of trying to steerer" for selling a gilded brick to an satisfy this appetite with alcoholic stimuunsophisticated rustic, while another who lants, is it unreasonable to assume that a sells a fellow a finely engraved certificate, correction of the ocular difficulty would of exactly similar value, should be merely

restore natural conditions ?" expected to give a small fraction of his

We look forward with much interest gains to philanthropic purposes?

to the discussion of Dr. Prentice's paper Neither business reaction, nor tight in the scientific journals. money, nor politics will explain the persistent stubbornness of the people in refusing to flock back to the stock market. Wireless Telegraphy They have seen the long list of receiverships with their unsavory revelations, re

and Exploration duced dividends, and unexplained slumps in stocks of other companies, and natur- MARCONI, in discussing the progress

of wireless telegraphy, calls attenally look askance at all stocks with which

tion to its value in exploration. It will the names of the manipulating “Na

not be necessary in the future for arctic poleons" of finance, however exalted and

explorers to die from starvation because pious, are associated. They suspect that

they are lost from civilization. By means the gambling is going on with loaded

of wireless telegraphy it will be very easy dice, and will invest only when they have

for an exploring party to keep in daily a tip that the dice are loaded on their

communication with their home people. side. The whole business thus becomes

Hereafter every arctic expedition, probimmoral.

ably, will be equipped with a wireless A greater man than Mr. Lawson once

telegraphic outfit. The explorer can tell sang of the “damned lust for gold;" the

his friends at just what point he stands. “Story of Amalgamated” is the solo ob

If he is in need of supplies he can direct ligato of the financial chorus.

low these shall be forwarded to him and of what they shall consist, and he can

direct his rescuers how to reach him. A New Cure for Intem All that applies to the arctic explorer perance

applies with equal truth to the explorer in

the jungles in the interior of Africa and AT

T TIIE OPTICIANS' CONVEN Australia. Had the wireless telegraph

TION held recently in Milwaukee, been invented in Dr. Livingstone's time, Wisconsin, Dr. Prentice of Chicago, in it would not have been necessary to send a paper read before the delegates, stated Henry M. Stanley to Lake Tanganyika that in properly fitted eyeglasses lay a to find him. He would have been able possible cure for alcoholism. This state to wire for help when he first fell a vicment is based on observations to the ef tim to the jungle fever.



THE ENTHUSIASTIC AMA- burring it over the plate by hammering.

TEUR who has succeeded in This makes good contact, without solderproducing some of the beauti ing, which is to be avoided. The next

fully artistic work of which the requisite is a rather deep, flat-bottomed, lathe is capable, or who has in his pos circular, well-glazed, earthenware dish. session a coin or medallion from which A soup-plate will answer very well, unhe requires to take a duplicate, will be less the objects to be copied are very pleased, and agrecably surprised, by the large, in which case one of the square charming results that can be obtained by white earthen dishes used by photogreproducing these in copper, by electro raphers wherein to wash their prints may deposition. The process is at once simple be used. Two or three yards of No. 18 and inexpensive, and, by a little modifica

or No. 20 bare copper wire will also be tion, can be used to give reproductions required for the purpose of connecting either precisely similar to the original, or up the wooden ornamental turned work ones in which the reliefs and depressions to the negative pole of the dry cell. are reversed. As the latter, in orna Being provided with the above necesmental turned work, are very effective, saries, the operator selects the turned we shall describe the method of obtaining work which he desires to reproduce in these first.

copper, and brushes over the worked surReversed Duplicates

face with a paste made of good fine The operator will provide himself with plumbago (black lead) and a little water. two or three good "dry cells." A con

The brush made use of must not be so venient size measures 6 in. by 2 in. He

hard as to mark or in any wise deface will also require a saturated solution of

the delicate tracery of the original; but, sulphate of copper (blue vitriol), which on the other hand, it must be sufficiently he can make by pouring one quart of

firm to enable the operator to get up a boiling water on one pound of sulphate brilliant, metallic-looking surface like of copper, stirring frequently with a stick that of a well-polished stove. For conor glass rod until cold. The solution venience of future reference we shall call should be made up in a glazed earthen

this blackleaded surface the “front" of vessel. When quite cold, about one and


mould (technically termed the a-half fluid ounces of oil of vitriol should "cathode”). The purpose of performing te added to the blue fluid, in a fine

this operation is to render the wood, stream, with constant stirring. The ad which would not otherwise conduct elecdition of the oil of vitriol will cause the

tricity, conductive on this surface. It solution to get hot. It must be allowed

must be borne in mind that wherever the to cool, when it may be placed in a stop

black lead has been applied, there will the pered bottle, ready for use. Several copper be deposited. Hence to prevent discs of thin sheet copper (about 1-16 in. waste of battery power, copper, and time, thick) of varying diameters, according

care must be taken not to carry the blackto the size of the work to be reproduced, leading too far up the sides of the work. will also be needed; and to the edge of A little way up, it must reach, so as to each of these (which


enable good contact to be made with the "anodes”) is to be attached a wire by wire, which will afterwards serve to condrilling a little hole near the edge of the nect the work to the negative pole of the disc, and inserting therein one end of a dry cell. The best way to effect this is 10-in. length of No. 16 copper wire, and to take a strip of paper, and roll it tightly

round the sides of the work, leaving Reprinted by special arrangement, from The Engineering World, London, Eng.

about 14 in. bare all round near the front



of the mould. Holding this tightly in so bent that the front of the mould is the left hand, it will be easy to blacklead immersed in the solution as far as the and polish the edge as well as the front wire binding extends, or, say, for a without encroaching too far up the sides. depth of about 14 in. The work should When this has been satisfactorily ef lie perfectly horizontal, facing, but not fected, the paper strip, which served as a touching, the anode, at a distance of guard, can be removed. Now, taking a about 34 in. to 1 in. from its surface. In piece of the No. 18 or No. 20 bare cop immersing the mould, care must be taken per, and gripping one end in the vice, he to avoid air bubbles, and this can be done will wind it two or three times round by letting down the front of the mould, the blackleaded edge of the work, so as somewhat tilted, so as to allow any air to grip it firmly and make good electrical bubbles to escape; the wire can aftercontact with the black lead under it. The

wards be straightened to cause it to lie extremities of this wire are brought to horizontally. Great care must be taken gether and twisted tightly, so that the that good metallic contact is made becoils may not loosen. The wire should tween the two wires and their respective now be cut off at a distance of about 10 dry-cell terminals; and also that no

chance contact occurs, either between these two wires on the one hand, or between the mould and the anode on the other. After thus connecting up, the front of the mould should be allowed to remain in the solution for about fifteen minutes. It should then be examined in order to judge of the success of the work.

If the binding wire shows that it has received a rosy-pink deposit, beginning to extend to the edge and creeping round

to the front of the mould, all is going D, Dry Cell; P. Wire to Positive Terminal; N, Wire to well—the current is of the right Negative Terminal: M, Mould or Cathode; A, Anode; 0, Dish.

strength; and if the mould be carefully

replaced in the solution, the terminal conin. from the work, and bent upwards at tacts being maintained tight and good, right angles to the front of the mould. it will be found that after ten or twelve An ano le is now selected, having hours' immersion the entire surface of a diameter nearly possible the mould will have received a delicate that of the front of the mould. coating of copper. To get a layer 1-16 (This wire, far it will be in. thick it may be needful to continue immersed in the copper sulphate solution, the operation for three or even four days, must be painted over with a little Bruns or even to replace the dry cell by a fresh wick black, otherwise it will be eaten one, according to the size of the mould. through by the solution.) The other end But if, on examination, it is found that of this wire must then be clamped under the surface of the binding wire and of the terminal affixed to the carbon (or the front of the mould are coated with positive) pole of the dry cell, and then a ruddy brownish mud, tending to fall bent twice at right angles in such a man to the bottom of the dish, and especially ner that the anode can lie flat at the bot if bubbles of gas form on and round tom of the dish, which must be placed about the mould, it is a sign that the near the dry cell. The dish should now current is too strong. In this case it will be filled to a height of about to 1'4 in. be necessary to remove the anode farther from the bottom, with the copper sulph away from the front of the work, or even ate solution prepared as directed. The to insert a "resistance” in the shape of work to be copied is now attached, by a foot or two of No. 36 iron wire beits slinging wire, to the zinc (or nega tween the anode and the carbon terminal tive) pole of the dry cell, and the wire of the dry cell. When it is considered





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