If you enter the red house and show a proper interest in the subject, Mr. Eddy will take you up to his kite-room, where skyflyers of all sorts, sizes, and materials range the walls--from the tiniest, made of tissue paper, to nine-footers, with lath frames and oil-cloth coverings. Hanging from the ceiling is one of the queer Hargrave kites, which looks like a double box, and seems as little likely to fly as a full-legged dining-table; yet fly it will, and beautifully too, though by a principle of aëroplanes only recently understood. Then Mr. Eddy will show you the room where, with the help of his deft-fingered wife, also a kite enthusiast, he spends many hours developing and mounting photographs taken from high altitudes, with a camera especially constructed to be swung and operated from the kite cord. Until one talks with a man like Mr. Eddy--though, indeed, there is no one just like him--one does not realize what a large and important subject this of scientific kite-flying is. Many men of distinction have devoted years of their best energies to experiments with kites. Mr. Eddy himself is a scientist first, last, and always; for the sake of a new observation he will send up a tandem of kites when the thermometer is below zero, or stand half a night at his reeling apparatus, getting records of the thermograph. [Illustration: HARGRAVE LIFTED SIXTEEN FEET FROM THE GROUND BY A TANDEM OF HIS BOX-KITES.] Perhaps I shall do best to begin by giving some useful information to those who may contemplate constructing a modern scientific kite. The first thing that should be done by such a person, be he boy or man, is to rid his mind of all his preconceived notions about kites, for it is almost certain that they are incorrect. To begin with, the scientific kite has no tail. A few years ago people would have laughed at any one who attempted to send up a kite without a tail. But the question is now no longer even open with the scientific kite-flyers, who not only send up tailless kites with the greatest ease, but do so under conditions which, to kites with tails, would be impossible: for instance, in dead calms and in driving hurricanes. The tailless kite, sent from the hands of a master, will fly in all winds.