DUNDONALD (Archibald Cochrane, Earl of,). The Present State of the Manufacture of Salt explained; and a new Mode or refining British Salt, so as to render it equal, or superior to the finest Foreign Salt. To which is subjoined, a Plan for abolishing the present Duties and Restrictions on the Manufacture of Salt, and for substituting other Duties, less burthensome to the Subjects, more beneficial to the Revenue, and better qualified to promote the Trade of Great Britain.... With an Appendix, 17th May, 1785 [containing answers to critics of the first edition].1785

London: Printed by W. and A. Strahan: for T. Cadell; J. Stockdale; G. and T. Wilkie; and W. Richardson, Second Edition, half-title with faint water-mark on inner margin, [4], 85, [1], xxvii, [1] pp., disbound. Dundonald's chief contribution to late eighteenth century industrial chemistry was the production of soda from common salt, using a method that provided hints that led to the Le Blanc process. Goldsmith, 12855; Cole, Chemical Literature, 283.