New Mexico and Upper California have been ceded by Mexico to the United States, and now constitute a part of our country. Embracing nearly ten degrees of latitude, lying adjacent to the Oregon Territory, and extending from the Pacific Ocean to the Rio Grande, a mean distance of nearly 1,000 miles, it would be difficult to estimate the value of these possessions to the United States. They constitute of themselves a country large enough for a great empire, and their acquisition is second only in importance to that of Louisiana in 1803. Rich in mineral and agricultural resources, with a climate of great salubrity, they embrace the most important ports on the whole Pacific coast of the continent of North America. The possession of the ports of San Diego and Monterey and the Bay of San Francisco will enable the United States to command the already valuable and rapidly increasing commerce of the Pacific. The number of our whale ships alone now employed in that sea exceeds 700, requiring more than 20,000 seamen to navigate them, while the capital invested in this particular branch of commerce is estimated at not less than $40,000,000. The excellent harbors of Upper California will under our flag afford security and repose to our commercial marine, and American mechanics will soon furnish ready means of shipbuilding and repair, which are now so much wanted in that distant sea. By the acquisition of these possessions we are brought into immediate proximity with the west coast of America, from Cape Horn to the Russian possessions north of Oregon, with the islands of the Pacific Ocean, and by a direct voyage in steamers we will be in less than thirty days of Canton and other ports of China. In this vast region, whose rich resources are soon to be developed by American energy and enterprise, great must be the augmentation of our commerce, and with it new and profitable demands for mechanic labor in all its branches and new and valuable markets for our manufactures and agricultural products. While the war has been conducted with great humanity and forbearance and with complete success on our part, the peace has been concluded on terms the most liberal and magnanimous to Mexico. In her hands the territories now ceded had remained, and, it is believed, would have continued to remain, almost unoccupied, and of little value to her or to any other nation, whilst as a part of our Union they will be productive of vast benefits to the United States, to the commercial world, and the general interests of mankind. The immediate establishment of Territorial governments and the extension of our laws over these valuable possessions are deemed to be not only important, but indispensable to preserve order and the due administration of justice within their limits, to afford protection to the inhabitants, and to facilitate the development of the vast resources and wealth which their acquisition has added to our country.