At that date the _Zeppelin I_ was by far the largest and most elaborate air ship ever constructed. Her hull measured 416 feet long, 38 feet across, cubed nearly 400,000 feet, weighed 9 tons, and had a displacement of 10 tons. The trellised frame was made of aluminum, and its body comprised seventeen compartments, of which fifteen were 26 feet long, and the other two 13 feet long. The outer cover was of linen treated with pegamoid and tightly stretched. The hydrogen sacs were of thin fabric. The propulsion was effected by two benzine motors, one in either boat, which together developed 32 horse power, each driving, by means of bevel gears and shafting, a pair of four-blade propellers 3.77 feet in diameter, at 1,100 revolutions per minute. Steering sidewise was effected by means of vertical rudders, while the trim was controlled by horizontal rudders at either side of the vessel, as also by means of a sliding weight which could be drawn fore and aft by means of a winch. Naturally some of these details were superseded ere long by better devices suggested by subsequent experience. On October 17, 1900, _Zeppelin I_ made her second voyage, and with much better result. Starting from the same balloon house at Manzell, at four-forty-five, she promptly rose a thousand feet, and maneuvered in a seven-mile wind, steering in great curves at the will of the pilot. At times the speed was nearly twenty miles an hour, as determined by continuous observations of the balloon’s position, taken from three points of a triangle, together with the velocity of the wind on its course, duly recorded by an anemometer. Finally a landing on the water was made at six o’clock, without mishap. This last demonstration left the Count triumphant in other respects, but without sufficient funds to bring his invention into practical use. He must, therefore, look for additional money for the proper continuation of his great work. The financial task thus ensuing occupied much of his time during the next five years, but he finally secured capital enough to continue his experiments and to build a second airship. This was completed and ready for trial in the latter part of 1905.