2. Charles Bernard Wadström, with whom JQA was to stay during part of the coming winter, was a Swedish mechanical and mining engineer in government service. In 1769 he was responsible for making navigable the cataract of Trollhättan (sometimes Trolhaéetta or Drolhetta), which JQA saw on 20 Jan. 1783
(below). In 1787 Wadström went to Africa, where he remained for two years. Afterward he visited England, where he advocated the abolition of the slave trade and encouraged the establishment of philanthropic colonies in Africa. While in London he published in 1789 his Observations on the Slave Trade, and a Description of Some Part of the Coast of Guinea . . .
, as well as subsequent works of a similar nature. Later, while minister resident to the Netherlands, JQA renewed his friendship with Wadström by correspondence (Helen Maria Williams, “Memoirs of the Life of Charles Berns [Bernard] Wadström,” The Annual Register . . . For the Year 1799
, new edn., London, 1813, p. 326–330; Wadström to JQA, 5 Dec. 1795, and JQA to Wadström, 5 July 1797, LbC
, Adams Papers