A London encyclopaedia, or universal dictionary of science, art, literature and practical mechanics : comprising a popular view of the present state of knowledge : illustrated by numerous engravings, a general atlas, and appropriate diagrams
A volume of Thomas Curtis's London Encyclopaedia, published by Thomas Tegg in London in 1829, a general reference dictionary of science, art and practical mechanics aimed at self-educating readers and tradesmen. The plates are engraved instrument diagrams, several plates to a page, keyed with figure numbers and letters: electrostatic machines, Leyden jars, brass spheres on insulating stands, balances, bell jars, a cannon on a carriage, all lightly tinted with stippled shading, useful as apparatus silhouettes and numbered plate layouts.
