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"Specification of the patent granted to John Thomas Barry of Plough-Court; Lomard Street, London, Chemist & Druggist; for the improved apparatus for Distillation, Evaporation and Exsiccation, and for the Preparation of Colours. Dated May 24 1819"
COLOURS.

Engraved plate.

Binding	8vo disbound,
Publication	extracted from Repertory of Arts, Manufactures, and Agriculture, April 1821, pp. 257-266.

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"Specification of the patent granted to John Thomas Barry of Plough-Court; Lomard Street, London, Chemist & Druggist; for the improved apparatus for Distillation, Evaporation and Exsiccation, and for the Preparation of Colours. Dated May 24 1819"COLOURS.