The year 1851 is memorable for the celebration, at Boston, of the opening of the Ogdensburg Railway, to connect Boston with Canada and the Lakes, and also of the Grand Junction Railway, a semicircular line by which all the railways radiating from that city are linked together, so that a passenger starting from any one of the city stations can take his ticket for any other station on any of those railways, either in the suburbs or at distant points. I am not aware that so perfect a system has been attempted elsewhere. The natural configuration of its site has probably suggested the scheme. Boston proper is built on an irregular tri-conical hill, with its famous bay to the east; on the north the wide Charles River, with the promontory and hills of Charlestown and East Cambridge; on the south Dorchester Heights. Between the principal elevations are extensive salt marshes, now rapidly disappearing under the encroachments of artificial soil, covered in turn by vast warehouses, streets, railway tracks, and all the various structures common to large commercial cities. It was in the month of July, that a deputation from the Boston City Council visited our principal Canadian cities, as the bearers of an invitation to Lord Elgin and his staff, with the government officials, as well as the mayors and corporations and leading merchants of those cities, and other principal towns of Upper and Lower Canada, to visit Boston on the occasion of a great jubilee to be held in honour of the opening of its new railway system. Numerous as were the invited Canadian guests, however, they formed but a mere fraction of the visitors expected. Every railway staff, every municipal corporation throughout the Northern States, was included in the list of invitations; free passes and free quarters were provided for all; and it would be hard to conceive a more joyous invasion of merry travellers, than those who were pouring in by a rapid succession of loaded trains on all the numerous lines converging upon "the hub of the universe."