Pitt, very thin, stands rigidly erect in profile to the right. Mrs. Hobart, immensely fat, completely fills a globe which stands on a rectangular platform on castors, and whose circumference rests against Pitt's post-like person. She looks up at him expectantly; he stares over her head with a pained expression. Beneath the title is etched: 'Definitions from Euclid. Def: Ist B: 4th. A Sphere, is a Figure bounded by a Convex surface; it is the most perfect of all forms; its Properties are generated from its Centre; and it possesses a larger Area than any other Figure. - Def: 2d B: Ist A Plane, is a perfectly even & regular Surface, it is the most Simple of all Figures ; it has neither the Properties of Length or of Breadth ; and when applied ever so closely to a Sphere, can only touch its Superficies, without being able to enter it - Vide. Euclid, illustrated; by the Honble Mrs Circumference.' 3 January 1792 Hand-coloured etching
