Not less important to the farming interest, as to every interest in the country, is a railroad uniting the States on the East side of the Rocky Mountains with the Pacific shores. The advantages of such a National work are numerous, and if the people and the government of the Union understand fully its importance, they will lose no time in undertaking it. The practicability of the work is not to be questioned; the country through which it _should_ pass, and the energy and enterprise of the American citizens are sufficient guarantees for its feasibility. The immense advantages in a commercial point of view to be derived from such an enterprise are indisputable. The trade of China, of the Islands of the Pacific and the whole Western coast of America, will be brought so much nearer the Union that it will not fail to pour immense wealth into her lap. She will become really a formidable commercial rival of Great Britain, and a common carrier to the whole of Europe. It will bind the whole Union with more indissoluble ties; the sectional interests of each State will be mingled and merged in the common interest made fast to the Pacific shore. To California individually, such a railroad will be of great consequence, as it will make it a centre of an extensive commerce, and will bring to her a sufficient population to develope all her internal resources. Once before we have indicated the route for such a railroad, and we will take this opportunity to enforce it upon the public still more, as farther reflection and information upon the subject enables us to do even with more reason than before.