Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . Fig. 3, -The flying ship, designed by-Francisco de Lana. THE EAELY HISTORY OF THE ART. 5 which the one may be called aerostatics, and the otheraerodynamics. Aerostatical devices include those in which theload is lifted by filling certain spaces with a gas which is lighterthan air, whereas in aerodynamical machines the effect is pro-duced by means of propellers or other arrangements of a similarkind, tending to cause motion through the air. Bartholomaus.
Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon . Fig. 3, -The flying ship, designed by-Francisco de Lana. THE EAELY HISTORY OF THE ART. 5 which the one may be called aerostatics, and the otheraerodynamics. Aerostatical devices include those in which theload is lifted by filling certain spaces with a gas which is lighterthan air, whereas in aerodynamical machines the effect is pro-duced by means of propellers or other arrangements of a similarkind, tending to cause motion through the air. Bartholomaus. Fig. 4.—Photograph of Augsburg, showing the cathedral. Taken from aballoon by A. Biedinger. Laurenzo de Gusmann constructed an airship in Lisbon in theyear 1685 out of a wooden basket covered with paper, and if thefacts were true, he would seem to have been the first to work onaerostatical principles. His basket is said to have been filled withhot air, and the apparatus rose from the ground in the presenceof the royal Court at Lisbon. But the investigations of Lecornuclearly show that two totally separate experiments have been puttogether and ascribed to one man. It seems to be a fact that themonk Bartholomaus Laurenzo invented a machine and carried out 6 AIESHIPS PAST AND PEE SENT. certain experiments with it, about which nothing is known; andtwenty-five years later, a scientific man, named de Gusmann,announced the construction of a flying machine, with which heproposed to descend from a certain tower in Lisbon. His schememerely called on his head the derision of the mob, and the F
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Keywords: ., bookcentury1900, bookdecade1900, bookpubl, booksubjectaeronautics
