ACCUM, Fredrick. A PRACTICAL ESSAY ON CHEMICAL RE-AGENTS, or TESTS. ILLUSTRATED BY A SERIES OF EXPERIMENTS. Philadelphia: M. Carey & Son, May 1, 1817. 204 pp. 12mo. 11 x 18 cm. Contemporary binding of quarter leather with marbled boards. Ex-library, includes perforated and ink stamps, nineteenth-century labels pasted to front endpapers, and a small spine label. Binding shows some wear at hinges and corners. A bit of foxing to a small number of pages, otherwise clean and bright.