No further steps were taken in this direction until 1847, when another link was laid in the connections between Montreal and the eastern states by the building of a line between Montreal and Lachine. These two short lines, with one opened the same year between Montreal and St. Hyacinthe, were all the railway lines in operation in Canada until 1851. During this and the following year, additional lines were laid, but their object was still the same, to improve the facilities for transportation between Montreal and the cities of the United States. The line from Montreal to St. Johns was extended to Rouse's Point, New York, on lake Champlain, and that to St. Hyacinthe was carried on to Sherbrooke and the international boundary, where it joined with the Atlantic and St. Lawrence railway (an American line), and opened a connection by railway between Montreal and the Atlantic seaboard at Portland. This city became the winter port of the Canadian steamship line, the operations of which began in the winter of 1853. Until 1853, no part of what could be described as the Canadian railway system had been built. The lines then under operation were all for the purpose of bringing Montreal within the benefits of the American system. But this year--1853--three extensive schemes of communication were begun: the Grand Trunk Company started building the line running from Quebec to the western limits of the province at Sarnia; the Great Western Company built a line across the Niagara peninsula from the Niagara river to Detroit river; and the Northern Company, a line from Toronto northward to Georgian Bay at Collingwood. These lines brought the advantages of railway communication to every rising settlement in Upper and Lower Canada. As construction progressed the new lines were utilized by the post office department until the completion, in October 1856, of the Grand Trunk from Brockville and Toronto brought Quebec into direct communication by means of the Great Western railway with Windsor at the western end of the province. The reduction in time, which the railways had made it possible to effect in the delivery of the mails between Quebec and the leading points in the western part of the province was great. In 1853 the ordinary time for the winter mails to travel from Quebec to Kingston was four days; in 1857, they were carried between the two places in thirty-one hours; to Toronto the saving in time was the difference between seven days and forty hours. Before the era of railways ten and a half days were occupied in the journey from Quebec to Windsor. The railway carried the mails regularly in forty-nine hours.