Airship design mb-width 8417 ' With right ascension and

' With right ascension and North polar distance

Interior view of premises

It is an allusion to the mayoral election of1771

'The idle 'prentice turn'd away and sent to sea'

Airship design mb-width 8417 ' With right ascension andEngineering design for a 'manageable air balloon' or dirigible, sent to the Royal Society with a covering letter from its inventor and supplementary descriptive information. The drawing contains four figures: a side elevation (figure 1); front and rear elevations (figures 2 3); and a transverse section through the balloon (figure 4). The airship has a twin bladed propeller sited at the front, driven by pulleys and ropes from an engine (unspecified