Miners' safety lamp Finish:Single Figure 3 Spirographis spallanzanii

Figure 3 Spirographis spallanzanii

it is estimated to have been in excess of $1

Cemetery at Bunhill Fields

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

near St James

Miners' safety lamp Finish:Single Figure 3 Spirographis spallanzaniiPlate 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.