folding frontispiece by T. Rowlandson. 1820. 1820 (about). _Chemical Lectures._ Designed and published by T. Rowlandson, 1 James Street, Adelphi.--Sir Humphrey Davy is exhibiting experiments at the Royal Institution before a highly respectable audience of visitors and members of both sexes. An antiquated fogey, who has evidently no opinion of the brilliant young lecturer, is snarling at the demonstrations. A treatise of the period, _Accum's Lectures_, is shown in his coat-pocket.