Amongst the survivors of the time, now so far back, of my long residence at Washington, I was glad to find General Emory and his wife. One of the earliest explorers of the territories acquired from Mexico at the outset of the war, he commanded the 6th Cavalry, which was quartered at Washington on ground which is at present covered with fine houses. After a distinguished career in the campaign he became Governor of New Orleans, where he re-established confidence and did much to abate the bitter feelings which had been aroused by the acts of his predecessors in the minds of the inhabitants. Of the officers of that gallant corps, after whom I enquired, there were none left that I knew; and the same answer was made to each name I uttered. "What has become of W----?" "Oh! dead long ago." "What of L----?" "He is dead, too." "What of K----?" "Oh; poor fellow, he died not very long ago;" and so on. "The Commodore," our neighbour, witty, shrewd, quaint, and the embodiment of kindly fun and satire, he too is gone! It is the penalty of living to lose one's friends. The feelings which were aroused by these memories were not diminished by a visit to Brady the photographer, who displayed whole albums filled with likenesses of deceased friends, and worse still, with photographs--alas! no longer likenesses--of men and women taken twenty years ago, now offering painful contrasts to their recognisable semblances in the life and flesh. Another old friend, General Hazen, called on us to-day. General Hazen visited the headquarters of the German army during the siege of Paris, and was for some time in residence at Versailles, where I often had the pleasure of meeting him, and he subsequently made an extensive tour over Europe, with the view of examining the military establishments of the Great Powers, of which he recorded the results in a very useful volume. He is now in charge of the Meteorological Department, to which the Duke paid a visit in the afternoon; and the mechanism and arrangement of the extensive system of observations for national purposes conducted under his care were shown and explained to us by the officers of the department in the most painstaking manner. And then there was the Smithsonian to be visited, where the rooms seemed to me haunted by the shade of the dear Professor Henry who was wont to accompany me through the galleries in times past, explaining the mysteries of the contents of the institution over which he presided with such care, knowledge, and judgment, with that gentle and persuasive inductiveness which we recognise in the style of Professor Owen. The Patent Office, which would repay a week's careful study, was hurriedly inspected, and the Post Office and Agricultural Department shared the same fate. Everywhere we had to acknowledge the extreme courtesy of the officials of the national establishments in the United States.