Drawings, forms of miners' safety lamp by [Humphry Davy?] Plate 5 showing whole views and details of safety lamps including Davy's platinum wire refinements. The work is inscribed with publication and plate details. Brief instructions to the engraver are in Davy's hand: 'turn upside down' and 'to be separated from'. Not signed. Royal Society stamp verso. Watermarked 'J Whatman 1811'. Subject: Engineering Published in Philosophical Transactions as part of paper titled 'Some new experiments and observations on the combustion of gaseous mixtures, with an account of a method of preserving a continued light in mixtures of inflammable gases and air without flame' by Humphry Davy. Read to the Royal Society on 23 January 1817. [1817]