Jeannette Expedition New York early in 1874; the newspaperman was impressed by De Long, and assured him that his Arctic ambitions would have the enthusiastic support of the "Herald". In the meantime De Long had applied to the Navy Department for an Arctic command, a request that he was informed would "receive due attention". James Gordon Bennett Jr., had succeeded his father as proprietor of the "New York Herald" in 1866. He had won renown in 1872, when his reporter Henry Morton Stanley, sent by Bennett to Africa in search of the British missionary-explorer David Livingstone, cabled that Livingstone had been found.
19th century in science later in the 19th century by the German mathematician Bernhard Riemann; here no parallel can be found and the angles in a triangle add up to more than 180°. Riemann also developed Riemannian geometry, which unifies and vastly generalizes the three types of geometry. The 19th century saw the beginning of a great deal of abstract algebra. Hermann Grassmann in Germany gave a first version of vector spaces, William Rowan Hamilton in Ireland developed noncommutative algebra. The British mathematician George Boole devised an algebra that soon evolved into what is now called Boolean algebra, in which the only numbers were