As in his astronomical work there was little of lasting importance.He did, however, publish the Leipzig Journal for Pure and Applied Mathematics between 1776 and 1789.He sold the letters to the Stockholm Academy where they remained forgotten about until 1877.Born: 4 Nov 1744 in Basel, Switzerland.Died: 13 July 1807 in Berlin, Germany.J J O'Connor and E F Robertson.Для подготовки данной работы были использованы материалы с сайта.