Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 61
ward toward me-chanical flight was made by the Australian watch-maker Degen, who balanced his wing surfaces witha small gas balloon. His first efforts to fly not beingsuccessful, he abandoned his invention and took toballooning. Stentzel, an engineer of Hamburg, came next with 60 FLYING MACHINES, a… … Stentzels machine. were slightly concave on the lower side. The rud-der-tail was of two intersecting planes, one verticaland the other horizontal. It was operated by a car-bonic-acid motor, and made 84 flaps of the wingsper minute. The rush of air it produced was so FLYING MACHINES. 61 great that…
Aeronautics
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