CHAPTER XIV.

Natural History retarded by the work of the shop—Writing 166–171 engraving—Plates for bank notes—Prevention of forgery—Carlisle bank note—King George III. approves of this note—Correspondence with S. Thornton, Esq., 1801—Ends in nothing—Commission appointed to investigate the subject of forgery, 1818—Engrave plates for the Berwick Bank—The Northumberland Bank—Gave in a plan to the commissioners—The leading objects permanency, &c.—Correspondence with Sir Joseph Banks on the subject—Fairman, Perkins, and Heath—Their specimens—Opinions of the commissioners delivered in the House of Commons by Mr. Pierce—Sir William Congreve a commissioner—His successful operations