On the eighteenth of December the whole of the American Boundary Commission had arrived at Paso del Norte, with the exception of an ox-train carrying supplies. The military escort, under the command of Col. Craig, was encamped on the American side of the Rio del Norte, but was soon to start for the copper-mines near the headwaters of the Gila. The Mexican Commissioner, General Conde, with his escort, was quartered in the town of El Paso. Several conferences took place between the Commissioners before they could agree on the starting-point for the boundary, the existing maps being as inconsistent with the terms of the treaty of Guadalupe Hidalgo as with the topography of the country itself. The winter, throughout the valley of the Del Norte has been very severe. The thermometer fell to six degrees at El Paso on the sixth of December, and the Rio Grande was frozen over for the first time in the memory of the inhabitants. The settlements of New Mexico are threatened with scarcity. On the tenth of January corn was selling at three dollars the bushel, and vegetables not to be had at any price. The appearance of the agents for taking the census of New-Mexico had occasioned great alarm among the pueblos or villages. They feared that the account of their property was taken by the Government for the purpose of extortion and seizure. The Apaches have committed no depredations of late, but the Navajoes have broken their treaty by stealing several thousand sheep from the settlements on the Rio del Norte. In the Utah Territory the Mormons have temporarily settled the question of slavery, by leaving it to the choice of the slaves themselves. If the slave chooses to leave his master, there is no power to retain him; if he chooses to stay, no one is allowed to interfere.