In this examination of the right of appropriation I thought it proper to present to view also the practice of the Government under it, and to explore the ground on which each example rested, that the precise nature and extent of the construction thereby given of the right might be clearly understood. The right to raise money would have given, as is presumed, the right to use it, although nothing had been said to that effect in the Constitution; and where the right to raise it is granted without special limitation, we must look for such limitation to other causes. Our attention is first drawn to the right to appropriate, and not finding it there we must then look to the general powers of the Government as designated by the specific grants and to the purposes contemplated by them, allowing to this (the right to raise money), the first and most important of the enumerated powers, a scope which will be competent to those purposes. The practice of the Government, as illustrated by numerous and strong examples directly applicable, ought surely to have great weight in fixing the construction of each grant. It ought, I presume, to settle it, especially where it is acquiesced in by the nation and produces a manifest and positive good. A practical construction, thus supported, shows that it has reason on its side and is called for by the interests of the Union. Hence, too, the presumption that it will be persevered in. It will surely be better to admit that the construction given by these examples has been just arid proper than to deny that construction and still to practice on it--to say one thing and to do another.