Print. The New Transit Monomania / [monogram HH (Henry Heath)]; London, W Spooner, 377 Strand; Printed by W Kohler, nd. [1843-1846]. Lithograph, estimate size overall 30x40cm. Caricature after the Ackermann popular prints of Henson's Aerial, showing an aerial machine on display to a crowd, its virtues for financial speculation being expounded to a John Bull figure