Thus wrote 'that eminently deserving author,' Mr. Lewes Roberts, the 'delineator' of the Merchant's Mappe of Commerce in 1638. The 'true dimensions of our English traffique' even then excited his limited admiration and wonder. He could only imagine either that this commerce was 'at its full perfection, or that it aymes higher than can hitherto, by my weake sight, be either seen or discerned.' To us, 'the full streame' of that trade seems but 'a petty rivolet,' and we only wonder how, with the complicated and varying systems of money then in practice, with measures of length and quantity differing in almost every place of importance in Europe, any commerce could be kept up between differing nations. It is no longer needful to note now, as it was then, that different weights and measures were to be found in the principal cities even of the same country. It is no longer needful to bear in mind, as it was then, that there was a difference of exchange between places close to each other, and within the same territories. Commerce now would not bear such fetters. The vigour of the early days of trade surmounted those obstacles as the rush of a mountain stream drives it unhindered over rocks that vainly bar its course. In these times affairs approach what has been termed the stationary state. As the stream expands, the current becomes more gentle. As facilities for trade become greater, a smaller obstacle suffices to turn that trade from its course. It is now far more easy to give a vessel the option of discharging her cargo in one port or another, in one country or another, than it was then. Increased opportunities of intercourse render any change of the line of traffic far less difficult now than at any previous time. A smaller difference in profit renders such alterations of destination more desirable and more necessary. The course of commerce has just been compared to that of a stream--as dashing rapidly down the mountain glen, or slowly moving through the rich and level plain. Is it permissible to carry on the simile still further?--to watch how, as in Holland, a trifling artificially-produced change of level is sufficient to divert the scarcely perceptible flow of the almost stagnant flood--to add the waters of the Rhine to the Yssel, or of the Waal to the Lech? So as a general extension of wealth brings all countries more closely to one uniform condition, is it not needful to remove those obstacles which may cause similar diversions of our trade? Is it not needful to take a step onward, and to supply our own people with those advantages which are now possessed by many--will soon be possessed by almost all civilized nations? Among such advantages, to provide a coinage which, while entailing no expense on the country, either at its creation or for its maintenance, may be truly international in character, and aid the streams of our commerce to maintain their course around the globe.