Boat sailed by aerostatic 'wings' Finish:Float frame plate V of Industry and

plate V of Industry and Idleness

' The print has been trimmed

Exterior view with a description

Plate 9 from The zoological miscellany

Boat sailed by aerostatic 'wings' Finish:Float frame plate V of Industry andPlate 21 for the paper 'Sur un moyen de donner la Direction aux machines aerostatiques', by Comte de Galvez [Bernardo de Glvez y Madrid, Viscount of Galveston and Count of Glvez (1746 1786)], Philosophical Transactions of the Royal Society, vol. 74 part 2 (1784), pp. 469 470. The illustration shows the vessel under way with three pairs of 'sails' being operated manually. The papers states that these were inspired by 'the use birds make of their wings