Forms of miners' safety lamp Product:Framed picture The three figures at the

The three figures at the base represent Britain

22nd September 1988

' and in pencil lower right 'Js Basire sc

3 û bottom left image

armoury and military store

Forms of miners' safety lamp Product:Framed picture The three figures at thePlate 5 from the paper '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, Philosophical Transactions of the Royal Society, vol. 107 (1817), pp. 77 85. Whole views and details of safety lamps including Davy's platinum wire refinements. Original: ink on paper. 1817