L'estro armonico National Library of Wales in Aberystwyth. The 1797 Encyclopædia Britannica records that the fifth concerto was also played on an Irish variant of Benjamin Franklin's celebrated invention, the glass harmonica. Under the entry for "Harmonica" or "Armonica", a 35-glass harmonica is described, about which its inventor, the Dublin physician Edward Cullen, writes: There were numerous arrangements for keyboard instruments in the eighteenth century, as described in the next section. One surviving eighteenth century transcription of Op.3, No.3 has been interpreted as an arrangement for glockenspiel. Themes from movements in the concertos were borrowed by other composers for vocal works: the
18th-century French literature de Sade (the Marquis de Sade) (1797); "Le Sopha- conte moral" ) ("The Sopha - a moral tale") by Claude Prosper Jolyot de Crébillon (1745), and "les Bijoux indiscrets" ("The indiscreet jewels") (1748) and "La Religieuse" ("The Nun") by Diderot (1760). The novel of feelings appeared in the second half of the 18th century, with the publication of "Julie ou la Nouvelle Héloïse" ("Julie, or the New Heloise"), in a novel in the form of letters, written by Jean-Jacques Rousseau (1761). It was modelled after the English novel "Pamela" by Samuel Richardson, which was the best-selling novel of the century,