GEORGE STEPHENSON bequeathed to his son his valuable collieries, his share in the engine manufactory at Newcastle, and his large accumulation of savings, which, together with the fortune he had himself amassed by railway work, gave Robert the position of an engineer millionaire-the first of his order. He continued, however, to live in a quiet style; and although he bought occasional pictures and statues, and indulged in the luxury of a yacht, he did not live up to his income, which went on accumulating until his death.

There was no longer the necessity for applying himself to the laborious business of a Parliamentary engineer, in which he had now been occupied for some fifteen years. Shortly after his father's death, Edward Pease recommended him to give up the more harassing work of his profession; and his reply (15th of June, 1850) was as follows:

"The suggestion which your kind note contains is quite in accordance with my own feelings and intentions respecting retirement; but I find it a very difficult matter to bring to a close so complicated a connection in business as that which has been established by twenty-five years of active and arduous professional duty. Comparative retirement is, however, my intention, and I trust that your prayer for the Divine blessing to grant me happiness and quiet comfort will be fulfilled. I can not but feel deeply grateful to the Great Disposer of events for the success which has hitherto attend

CHAP. XX.] EGYPTIAN BRIDGES.-CANADIAN RAILWAYS. 475

ed my exertions in life, and I trust that the future will also be marked by a continuance of His mercies."

Although Robert Stephenson, in conformity with this expressed intention, for the most part declined to undertake new business, he did not altogether lay aside his harness, and he lived to repeat his tubular bridges both in Egypt and Canada. The success of the tubular system, as adopted at Menai and Conway, was such as to recommend it for adoption wherever great span was required, and the peculiar circumstances connected with the navigation of the Nile and the St. Lawrence may be said to have compelled its adoption in carrying railways across both those rivers.

Two tubular bridges were built after our engineer's designs across the Nile, near Damietta, in Lower Egypt. That near Benha contains eight spans or openings of 80 feet each, and two centre spans, formed by one of the largest swing-bridges ever constructed, the total length of the swing-beam being 157 feet, a clear waterway of 60 feet being provided on either side of the centre pier. The only novelty in these bridges consisted in the road being carried upon the tubes instead of within them, their erection being carried out in the usual manner by means of workmen, materials, and plant sent out from England. The Tubular Bridge constructed in Canada, after Mr. Stephenson's designs, was of a much more important character, and deserves a fuller description.

The important uses of railways had been recognized at an early period by the inhabitants of North America, and in the course of about thirty years more than 25,000 miles of railway, mostly single, were constructed in the United States alone. The Canadians were more deliberate in their proceedings, and it was not until the year 1840 that their first railway, 14 miles in length, was constructed between Laprairie and St. John's, for the purpose of connecting Lake Champlain with the River St. Lawrence. From this date, however, new lines were rapidly projected; more particularly the Great Western of Canada, and the Atlantic and St. Lawrence (now forming part of the Grand Trunk), until in the course of a few years Canada had a length of nearly 2000 miles of railway open or in course of construction, intersecting the provinces almost in a continuous line from Rivière du Loup,

near the mouth of the St. Lawrence, to Port Sarnia, on the shores of Lake Huron.

But there still remained one most important and essential link to connect the lines on the south of the St. Lawrence with those on the north, and at the same time place the city of Montreal in direct railway connection with the western parts of Canada. The completion of this link was also necessary in order to maintain the commercial communication of Canada with the rest of the world during five months in every year; for, though the St. Lawrence in summer affords a splendid outlet to the ocean-toward which the commerce of the colony naturally tends-the frost in winter is so severe, that during that season Canada is completely frozen in, and the navigation hermetically closed by the ice.

The Grand Trunk Railway was designed to furnish a line of land communication along the great valley of the St. Lawrence at all seasons, following the course of the river, and connecting the principal towns of the colony. But stopping short on the north shore, nearly opposite Montreal, with which it was connected by a dangerous and often impracticable ferry, it was felt that, until the St. Lawrence was bridged by a railway, the Canadian system of railways was manifestly incomplete. But how to bridge this wide and rapid river! Never before, perhaps, was a problem of such difficulty proposed for solution by an engineer. Opposite Montreal, the St. Lawrence is about two miles wide, running at the rate of about ten miles an hour; and at the close of each winter it carries down the ice of 2000 square miles of lakes and rivers, with their numerous tributaries.

As early as the year 1846, the construction of a bridge at Montreal was strongly advocated by the local press as the only means of connecting that city with the projected Atlantic and St. Lawrence Railway. But the difficulties of executing such a work seemed almost insurmountable to those best acquainted with the locality. The greatest difficulty was apprehended from the tremendous shoving and pressure of the ice at the break-up of winter. At such times, opposite Montreal, the whole river is packed with huge blocks of ice, and it is often seen piled up to a height of from 40 to 50 feet along the banks, placing the surrounding country under water, and occasionally doing severe damage to the massive stone buildings erected along the noble river front of the city.

CHAP. XX.] ROBERT STEPHENSON APPOINTED ENGINEER. 477

But no other expedient presented itself but a bridge, and a survey was made accordingly at the instance of the Hon. John Young, one of the directors of the railway. A period of colonial depression having shortly after occurred, the project slept for a time, and it was not until six years later, in 1852, when the Grand Trunk Railway was under construction, that the subject was again brought under discussion. In that year, Mr. Alexander M. Ross, who had superintended the construction of Robert Stephenson's tubular bridge at Conway, visited Canada, and inspected the site of the proposed structure, when he at once formed the opinion that a tubular bridge carrying a railway was the most suitable means of crossing the St. Lawrence, and connecting Montreal with the lines on the north of the river.

The directors felt that such a work would necessarily be of a most formidable and difficult character, and before coming to any conclusion they determined to call to their assistance Mr. Robert Stephenson, as the engineer most competent to advise them in the matter. Mr. Stephenson considered the subject of so much interest and importance that, in the summer of 1853, he proceeded to Canada to inquire as to all the facts, and examine carefully the site of the proposed work. He then formed the opinion that a tubular bridge across the river was not only practicable, but by far the most suitable for the purpose intended, and early in the following year he sent an elaborate report on the whole subject to the directors of the railway. The result was the adoption of his recommendation and the erection of the Victoria Bridge, of which Robert Stephenson was the designer and engineer, and Mr. A. M. Ross the joint and resident engineer in directly superintending the execution of the undertaking. The details of the plans were principally worked out in Mr. Stephenson's office in London, under the superintendence of his cousin, Mr. George Robert Stephenson, while the iron-work was for the most part constructed at the Canada Works, Liverpool, from whence it was shipped, ready for being fixed in position on the spot.

The Victoria Bridge is, without exception, the greatest work of its kind in the world. For gigantic proportions, and vast length and strength, there is nothing to compare with it in ancient or modern times. The entire bridge, with its approaches, is only about sixty yards short of two miles in length, being five

times longer than the Britannia Bridge across the Menai Straits, seven and a half times longer than Waterloo Bridge, and more than ten times longer than Chelsea Bridge. The two-mile tube across the St. Lawrence rests on twenty-four piers, which, with the abutments, leave twenty-five spaces or spans for the several parts of the tube. Twenty-four of these spans are 242 feet wide; the centre span-itself a huge bridge-being 330 feet. The road is carried within the tube 60 feet above the level of the river, so as not to interfere with its navigation.

As one of the principal difficulties apprehended in the erection of the bridge was that arising from the tremendous "shoving"

and ramming of the ice at the break-up of winter, the plans were carefully designed so as to avert all danger from this cause. Hence the peculiarity in the form of the piers, which, though greatly increasing their strength for the purpose intended, must be admitted to detract considerably from the symmetry of the structure as a whole. The western face of each pier-that is, the up-river side has a large wedge-shaped cutwater of stone-work, presenting an inclined plane toward the current, for the purpose of arresting and breaking up the ice-blocks, and thereby preventing them from piling up and damaging the tube carrying the railway. The piers are of immense strength. Those close to the