Metallic oxide tints mb-code LMG162290 From an original portrait at

From an original portrait at the Royal Society

the tail is wedge-shaped

some on horseback and a large standard

Group of artillery at Tower Bridge

Map of the Cities of London and Westminster and Southwark

Metallic oxide tints mb-code LMG162290 From an original portrait atMetallic oxide tints, produced when a battery is discharged through a fine metallic wire, causing it to explode. From left to right: gold, silver, copper, iron, tin and lead. Illustration from Elements of galvanism, in theory and practice, by Charles Henry Wilkinson (London, 1804) the 'Lecturer on Galvanism in Soho square'. Original: engraving. 1804