Railroad Intelligence.

The prospect of the St. Lawrence and Atlantic Railroad, otherwise called the Montreal and Portland road, appears very favrourable: $3,500,000 have been subscribed to the stock, and that of the Canada section is quoted in England, at 1( per cent premium. The people of Maine are wide awake on the subject. The railroad from Boston to Canada, via Concord, Lebanon, Sherbrook, and Stanstead, is also progressing. The stock is already taken up for that section of the route between Lebanon and the Pausunipsic river. This is called the Central Route, and has been expected to connect with the Cheshire road, which is an extension of the Fitchburg railroad, through Kenne, N.H., and Rutland, Vt. But it is now decided to extend the two roads without connection. The contracts are already made for the Chesire road from Keene to Bellows Falls.

The Harlem Railroad Company have decided to extend their road twenty-four miles further, to a point near the Connecticut line. They have advertised for proposals for grading, &c. The Morris and Essex Railroad Company have resolved to extend their road to Dover,—a place situated in the midst of the iron regions of New Jersey.