Caricatures of the practice of science in the academies. Swift expands on this in his satirical depiction of the academy of "Laputa" in Gulliver's Travels.
J.J. Grandville (1803–1847), Caricatures from "Gulliver's Travels", 1843; source: Swift, Jonathan: Gullivers Reisen in unbekannte Länder, Stuttgart 1843, vol. 2, p. 61, p. 76.