A NEW GASLIGHTER AVERY useful device has been put on the market recently. A well known scientist discovered that a certain iron alloy on being lightly rubbed with a file will emit intensive sparks which instantly ignite gas. The practical application of this discovery consists of a metal rod holding on its top a little piece of this alloy. On the lower end of the rod is a button which, on being pressed, rubs the alloy against a rough surface, and the spark is emitted. Upright and inverted lamps may thus be ignited. other very useful application which is shown in the picture is the stove lighter. The alloy is fastened on the end of the lower leg which, on being pressed upwards, rubs against a vertical roughened surface. In releasing the hand pressure the lower leg jumps back to An DOING AWAY WITH MATCHES. New invention that lights lamps and fires. its original position by means of the spring like action of the rod, thus causing the alloy to spark violently. It is even possible to light gas lamps at the A CAT-GODDESS. Statue of Egyptian deity. once worshiped as divine. top of masts, merely by turning the cock, a slight gas pressure starting a mechanism to light it. The alloy itself is practically indestructible and very cheap. PRIMITIVE PLOWING NOTWITHSTANDING that the group of Sandwich islands belongs to the United States government, yet the methods of cultivating the soil still remain very primitive and crude. The accompanying photograph shows the favorite method of plowing. The beasts of draft are a species of Indian buffalo that were originally brought from the Orient, and are smaller than the average American ox. Instead of a regular yoke, a crude, awkward affair is substituted a sort of rough wooden collar, attached to which are ropes wrapped around the horns of the animals. These are fastened to iron rings that are passed through the nostrils of the patient, sturdy creatures. It is by means of the ropes and rings that the team is guided. In the photograph a young tourist was holding the plow. UNDER MONORAIL CAR. REMARKABLE AMERICAN ENGINE THE accompanying illus tration shows the construction of an enormous Corliss engine for heavy duty in rolling mill service at the works of one of the great American steel companies. This engine was designed for a 22 inch mill and has a total weight of 750,000 pounds. This engine was built at Hamilton, Ohio, and develops 5,000 horsepower. INGENIOUS TELEPHONE DIRECTORY AN excellent adjunct for the telephone is a device intended to supplement the cumbersome and burdensome directory. It consists of a circular disk with indexed divisions for the insertion of the names of persons frequently called. It is intended to be placed on the telephone transmitter and the lower disk is revolved until the opening discloses the name and number desired. With this device the number is always directly in front of the person talking and removes the difficulty of endeavoring to remember the telephone number desired. This is the invention of an Ohio man and is useful. Wind Alarm -Cord Shelf -Trigger DELIVERING LETTERS BY PHONE THERE has been for some years more or less complaint of the non-delivery of mail on Sundays in London. An arrangement has now been made by the British post-office by which letters posted in the country on Saturdays can be delivered in London by telephone on Sundays. When it is desired to have the contents of the letter telephoned on Sunday it is inclosed in an envelope addressed to the central telegraph office in London, and a broad line is marked across the envelope from top to bottom. Postage stamps to the value of three pence-six cents-for every thirty words are forwarded. The postmaster - general states that the new scheme, while giving considerable additional facilities to the public, will add little or nothing to the Strap Spring Knife Switch FOLEY BUY amount of Sunday attendance by the post - office staff. The telephonists and others who will deal with the messages in London must in any case be on duty, the telephone exchanges. being open all Sunday. On the other hand, there will probably be some reduction in the force now employed to deliver telegrams and express messages on Sundays. The plan is susceptible of application in many other cities and may become useful when Sunday messages are important. TERMS: $1.50 a year; 75 cents for six months; 15 cents a copy. Foreign postage, $1.00 additional; Canadian postage, 50 cents additional. Notice of change of address should be given thirty days in advance to avoid missing a number. TECHNICAL WORLD COMPANY 5758 Drexel Avenue, Chicago I Madison Avenue, New York Entered at the Postoffice, Chicago, Ill., as second-class mail matter. Making a Business of Flying The leading article in the Technical World Magazine for August will be a vivid picture of the status of airshipping today. It will be a revelation to people whose knowledge of the new science is gained from fragmentary newspaper reports. Do you know that Germany has an airship that could sail from New York to Chicago and back without stopping, in any reasonable weather, at a speed averaging forty miles an hour, and carrying a ton or so of guns and ammunition? That is only one of the things this article points out as having supreme importance in world affairs. Insurance Against Idleness A record of a new undertaking in England to insure work to the man who wants it, and the results it is accomplishing, is another feature of the August number. Its appeal also is world wide and it is vitally interesting to Americans. Printing Without Ink The new electric process by which magazines, newspapers and books will soon be printed without printer's ink and with a great saving in time, expense and labor, is described in detail. Irrigation Miracles A story of absorbing interest about the veritable marvels that have been wrought by putting water on the land where and when it is needed and the tremendous undertakings now in progress, will attract everyone who takes any interest at all in our national resources. Mice and Measles Do mice carry measles? If so, how and when-and how shall we guard against them? This is a topic that has not been discussed before. There is evidence that mice are dangerous guests. It is convincingly presented. Twenty Other Articles, all of equal interest, fill the August number from cover to cover. Get the August issue from your dealer. Technical World Magazine Ready July 17th :: :: :: 15c the copy If the Technical World Magazine is mentioned we guarantee the reliability of our advertisers, |