This model was on view at the exhibition of the Aeronautical Society of Great Britain, held at the Crystal Palace, FIG.
Its engine represented a third of a horse power, and the weight of the whole (engine, boiler, water, fuel, superimposed aeroplanes and ' " On Aerial Locomotion," Aeronautical Society's Report for 186.7.
2 " Resistance to Falling Planes on a Path of Translation," Ninth Annual Report of the Aeronautical Society of Great Britain, 1874.
Lanchester (Society of Arts, 1909); and the Proceedings of the Aeronautical Society (founded 1865), &c.
This model, which was shown at the exhibition of the Aeronautical Society of Great Britain at the Crystal Palace in 1868, consisted of two superposed screws propelled by an engine, the steam for which was generated (for lightness) in an aluminium boiler.