Miners' safety lamp Finish:Single and Dr Joshua Ward

and Dr Joshua Ward

Elevation of St Paul's School with a portrait of the founder

one of whom holds a pair of scissors to be sharpened

it is estimated to have been in excess of $1

'The Saveall

Miners' safety lamp Finish:Single and Dr Joshua WardPlate 1 from the paper 'On the fire damp of coal mines, and on methods of lighting the mines so as to prevent its explosion', by Humphry Davy, Philosophical Transactions of the Royal Society, vol. 106 (1816), pp. 1 22. Safety lamp designs and details comprising figures 1 8 of the published plate, in a variant order. Figures 9 11 which appeared on the published plate are not present. The work is inscribed with publication and plate details. Not signed.