... manufactory was established at St. Hippolyte, in Alsace; the art was not fairly developed in France before 1797. This manufacture was subsequently introduced into England and Germany. In 1761, McBride of Dublin, and, in 1770, Johnson, introduced the use of dilute sulphuric acid for swelling the hides. Sumac was used in the first half of the eighteenth century, divi-divi, from Caraccas in 1768....