The part played by technical improvements in the maintenance of our present position cannot be over-estimated; for that position, such as it is, is not due to any inherent permanent advantages possessed by this country. Time was when our mercantile marine was severely threatened by competition from foreign states. To quote the most recent example, about the middle of last century the United States of America fought a well-contested struggle with us for the carrying trade of the world. Shortly after the abolition of the navigation laws, the competition was very severe, and United States ships had obtained almost exclusive possession of the China trade, and of the trade between Europe and North America, and in the year 1850 the total tonnage of the shipping of the States was 3,535,434, against 4,232,960 tons owned by Great Britain. The extraordinary progress in American mercantile shipbuilding was due, in part, to special circumstances connected with their navigation laws, and in part to the abundance and cheapness of excellent timber; but, even with these advantages, the Americans would never have been able to run such a close race with us for the carrying trade of the world, had it not been for the great technical skill and intelligence of their shipbuilders, who produced vessels which were the envy and admiration of our own constructors. As a proof of this statement, it may be mentioned that, the labour-saving mechanical contrivances adopted by the Americans were such that, on board their famous liners and clippers, twenty men could do the work which in a British ship of equal size required thirty, and, in addition to this advantage, the American vessels could sail faster and carry more cargo in proportion to their registered tonnage than our own vessels. It was not till new life was infused into British naval architecture that we were enabled to conquer the American competition; and then it was only by producing still better examples of the very class of ship which the Americans had been the means of introducing, that we were eventually enabled to wrest from them the China trade. Another triumph in the domain of technical shipbuilding, viz., the introduction and successful development of the iron-screw merchant steamer, eventually secured for the people of this country that dominion of the seas which remains with them to this day.