A briefe and pleasaunt treatise, intituled, Naturall and artificiall conclusions: written first by sundrie scholers of the Vniuersitie of Padua in Italie, at the instant request of one Barthelmewe a Tuscane: and now Englished by Thomas Hill Londoned [sic], as well for the commoditie of sundrie artificers, as for the matters of pleasure, to recreate wittes at vacant tymes