Two of the luxuries of life, pine-apples and ice, are found at Washington at a cheap rate. The former, imported from the West Indies, are sold at twenty-five cents each. The latter article is purchased, throughout the summer, at half a dollar per bushel. * * * It is deeply to be regretted, that the government or corporation did not employ some means for the preservation of the trees which grew on places destined for the public walks. How agreeable would have been their shade along the Pennsylvania Avenue where the dust so often annoys, and the summer sun, reflected from the sandy soil, is so oppressive. The Lombardy poplar, which now supplies their place, serves more for ornament than shelter. Water may be distributed to any part of Washington from several fine springs, and also from the Tiber Creek, the source of which is 236 feet above the level of the tide in the same stream. * * * The canal, which runs through the centre of the city, commencing at the mouth of Tiber Creek, and connecting the Potomac with its eastern branch, is nearly completed. Mr. Law (Brother to Lord Ellenborough) the chief promoter of this undertaking, proposes to establish packet-boats to run between the Tiber Creek and the Navy-Yard--a conveyance which may be rendered more economical and comfortable than the hackney-coach. This canal is to be navigable for boats drawing three feet of water. The population of the territory of Columbia, in 1810, amounted to 24,023. That of the city was 8,208; of Georgetown, 4,948; of Alexandria, 7,227. On August 24, 1814, the British arrived in Washington at about 6 o’clock in the evening. That night they burned the Capitol, the President’s House, the Treasury, State and Navy Department Buildings, and a number of private houses on Capitol Hill. The flames could be seen from the Francis Scott Key mansion at Georgetown. Several wagonloads of valuable documents had been taken a few days previously from the State Department to Leesburg, Va., 35 miles northwest of Washington, to a place of safety. The British also intended to burn the Patent Office, but Commissioner Thornton met them boldly, saying: “Are you Englishmen or Goths and vandals? This is the Patent Office, the depository of the ingenuity of the American Nation, in which the whole civilized world is interested. Would you destroy it? If so, fire away and let the charge pass through my body.” The British allowed it to remain and withdrew.