Those who wish to make many kites will do well to buy thin manilla paper, as wide as possible, having the dealer roll off for them seven hundred or eight hundred feet, say a yard in width, which will insure a cheap as well as an abundant supply. For strong winds and large kites it is best to use cloth as the covering. It should be sewed to the frame, and, if carefully put on, will do service for years. Silk, of course, is the ideal material; but its costliness puts it beyond ordinary means, and common silesia, such as is used in dress linings, is almost as good. Whatever the material, the kite should be fortified at the corners by pasting or sewing on quadrants of paper or cloth, so as to give double thickness at the points most liable to injury. A finished six-footer should not weigh over twenty ounces, if covered with paper; or twenty-five ounces, if covered with cloth. Mr. Eddy has made a six-footer for calm flying as light as eight ounces. HOW TO SEND UP A KITE. There is only one way to learn the practical art of kite-flying, and that is to begin and do the thing yourself--with many mishaps and disappointments at the outset. One of Mr. Eddy's practices when sending kites up in very light winds or in an apparent calm, is to reel out two hundred yards or so of cord in a convenient open space, leaving kite and cord on the ground until ready to start. Then, by taking the cord at the extreme distance from the kite, and beginning to run with it, he gets it quickly into the upper air currents, which are always stirring more than those at the surface. It is sometimes necessary to run for a considerable distance before the kite reaches a sustaining current; but a real kite enthusiast will not mind taking trouble; indeed he had better abandon the whole business if he does. It is worth noting that even in a dead calm a kite may be kept up indefinitely as long as the flyer is willing to run with the cord at the rate of about five miles an hour. In flying kites tandem there is always to be guarded against the danger of a breaking of the cord. Few people realize how hard a pull is exerted by a series of kites well up in the air. A strain of twenty-five or thirty pounds on the cord is not uncommon; and not only the strength of the cord, but the way of attaching it, is of great importance. There should be two strings (never more), fastened to the upright stick at its lower end and at the point of crossing, the upper length being about one-third of the lower one, and the two being adjusted so that, when taut, the kite takes an angle of about twenty degrees with the ground--which means that the kite goes up almost straight overhead, the string making an angle of about seventy degrees with the ground. [Illustration: THE HARGRAVE BOX-KITE. It was by kites of this variety, flown in tandem, that the inventor, Hargrave, was lifted sixteen feet from the ground on November 12, 1894.]