 Compared to the 1st edition, the second had five times as many long articles (150), including "Scotland" (84 pages), "Optics" (132 pages), and "Medicine" (309 pages), which had their own indices.The second edition was published in 181 numbers from 21 June 1777 to 18 September 1784; these numbers were bound into ten volumes dated 1778–1783, having 8,595 pages and 340 plates again engraved by Andrew Bell.A pagination error caused page 8000 to follow page 7099.