... 1840), conversed very often with Mr. Sumner, who much esteemed him, as his letter of June 30, 1841, shows. He had consumed so much time in his journeys that he was obliged to forego a visit to Dr. Julius at Hamburg, who had followed him with urgent letters of invitation: and from Heidelberg he went to the Rhine, thence to Cologne, Brussels, and Antwerp, and crossed to London, where he arrived, March...