Boat sailed by aerostatic 'wings' Finish:Float frame ' The print has been

' The print has been trimmed

View of Westminster Halll and New Palace Yard

quarter scale

the Aurelia was designed to replace the ageing Aprilia

December 27/1873

Boat sailed by aerostatic 'wings' Finish:Float frame ' The print has beenPlate 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