ADVERTISING WITHOUT PAPER-A PARIS SUBSTITUTE FOR THE BILLBOARD POSTER. NEW SORT OF COMMERCIAL ARTIST SINCE the suppression of posters in Paris, merchants, careful of their interests, have looked for a means of calling the attention of the patrons to their goods by means of pictures. Thus it is that one vendor of paints conceived the ingenious idea of giving his store-window into the hands of an artist whom we now see painting a picture thereon. The passer-by sees at once that there he can find all the requirements for feeding a motor, if he be aviator, automobilist or mechanic; everything necessary for a laboratory if he be chemist, or photographer, all essentials for painting if he be artist, or dauber, and in fact all things necessary to the interior of any place even if it be a menagerie. This is perhaps the best way of advertising without paper. STRAW FLOWERS THE seedsmen's catalogues list a great variety of everlasting flowers, so called. A collection of such plants is extremely interesting, and with the flowers beautiful bouquets may be made that will keep for months without fading. Some one wisely suggests that the ladies might wear these natural flowers POPULAR SCIENCE WHERE IS THE CENTER THE OF THE WORLD? HEY don't seem to have got the idea over in India that the earth is not a disc but a globe, for they still talk about the center of the world. In Delhi, where the Durbar is held, stands a lofty monument, or tower that goes by the name of Kutub Minor. It is a structure that towers far above the temple of which it is a part. The appearance of this curious piece of architecture is that of a number of tiers of individual columns, the columns seemingly being tied together into bundles. At big intervals there are balconies. The Kutub Minor is of especial interest and note in the world over which the religion of the teacher Buddha holds full sway. Here long ago, tradition has it a meteor fell, sent by the ruling powers in the mystic world beyond this life to mark the center of the world. In commemoration of this mirac-, ulous event, the Kutub Minor was erected on the spot that mankind might never forget it. TESTING AEROPLANE PROPELLORS 109 PROGRESS in the art of building aeroplanes has reached the stage where the various parts must withstand certain mechanical tests before they prove their fitness for service on the bird machine. Among the most interesting of these devices is one recently built by Professor David L. Gallup of the Worcester Polytechnic Institute, Worcester, Mass., for the preliminary testing of aeroplane propellers. BELIEVED BY DEVOUT BUDDHISTS TO BE AT THE CENTER OF THE WORLD. It is really a very imposing looking structure, rising up in a series of fluted tiers, each tier marked by a balcony. Higher and higher it rises, tapering as it recedes from the earth, above the surrounding plain. At some little distance stands a mosque-like structure connected with the main structure through the medium of masonry work. The illustration gives a fair idea of the construction of the apparatus. It consists principally of a turntable built to revolve about a heavy steel post lo cated a short distance from the shore in a small body of water. The turntable is built of structural steel throughout and equipped with a high power gasoline engine near the center of the apparatus and a shaft extending to one end through which the power is transmitted to the propeller to be tested. The tests are made by starting the gasoline engine and allowing the propeller by its pressure against the air to revolve the turntable about its center support. The quality of the propeller may be judged by the speed with which it is able to drive the turntable around during the test. TESTING AEROPLANE PROPELLERS BY MEANS OF A TURNTABLE AND POWERFUL GASOLINE This beautiful piece of sculpture stands in the Cours Le Reme, Paris. It was erected to the everlasting memory of the famous French poet. Alfred de Musset, who was born at Paris, in 1810. and who died there forty seven years later. He graduated from college with high honors and in his twentieth year published his first volume of verse. He was a man of intense passions, loose, irregular habits, and a morbid, introspective mind. He was elected a member of the famous French Academy in 1852. His years were curtailed by his dissolute way of living. This photograph shows a machine used by the government Forest Service for testing the telephone poles required for use in the national forests. Under present conditions it is deemed absolutely necessary that all parts of a forest reserve shall be under control through a system of intelligence which has for its principal agency the talking wire. If a fire breaks out anywhere, it is especially important that headquarters shall be notified with the smallest possible delay. The poles are tested to make sure that they are not defective. They must be strong in order to resist storm winds, and it is desirable at the same time that they shall have a reasonable measure of elasticity, so as to bend rather than break. POPULAR SCIENCE FLOATING WATER WORKS THE contrivance here shown is used by the Sanitary District of Chicago for watering the banks of their north channel which runs from Wilmette to Mayfair, where it joins the Chicago River. Under the contract by which the rightof-way was obtained, the Drainage Board agreed to have sloping grass banks to the channel. Of course, grass had to be sown and frequently watered. Consequently a very great quantity of water was required. This could only be obtained from the City mains at an enormous expense, and in addition to this expense, there would be the expense of laying several miles of pipe. By the arrangement shown the problem was perfectly solved. Sixteen empty oil barrels support a platform on which is mounted a boiler and a twelve horsepower engine. This engine operates the pumps and drives the propeller by which this queer craft is moved along. The pump is powerful enough to supply several hose nozzles, and the water of course, is drawn directly from the canal. The captain of this peculiar ship starts getting a supply of coal on board, and firing up at about 4 P. M. He is ready to begin his voyage about 5, and by 2 or 3:00 o'clock in the morning he has watered nearly 300,000 square feet of bank. 111 TRAMP SIGNS. 1. "grouches"; 2. a crime has just been committed: 3. look out for jail; 4. "nothing doing:" 5. give out feed here; 6. easily frightened; 7. policeman lives here; 8. defend your self: 9. you may sleep here; 10. dog: 11, man is brutal here: 12. give money here: 13. brutal people and dog: 14. the woman is alone with a servant: 15. "easy marks:" 16. they give to ill people; 17. be insistent: 18, be religious. GIVES UP SOCIAL POSITION TO LEARN CABINET TRADE. Mlle. Bernstein, the 17-year-old daughter of the prime minister of Denmark, who has just apprenticed her self to a cabinet maker. She works from six |