It may sometimes happen that the interests of particular States would not be deemed to coincide with the general interest in relation to improvements within such States.  But if the danger to be apprehended from this source is sufficient to require it, a discretion might be reserved to Congress to direct to such improvements of a general character as the States concerned might not be disposed to unite in, the application of the quotas of those States, under the restriction of confining to each State the expenditure of its appropriate quota.  It may, however, be assumed as a safe general rule that such improvements as serve to increase the prosperity of the respective States in which they are made, by giving new facilities to trade, and thereby augmenting the wealth and comfort of their inhabitants, constitute the surest mode of conferring permanent and substantial advantages upon the whole.  The strength as well as the true glory of the Confederacy is founded on the prosperity and power of the several independent sovereignties of which it is composed and the certainty with which they can be brought into successful active cooperation through the agency of the Federal Government.

It is, moreover, within the knowledge of such as are at all conversant with public affairs that schemes of internal improvement have from time to time been proposed which, from their extent and seeming magnificence, were readily regarded as of national concernment, but which upon fuller consideration and further experience would now be rejected with great unanimity.

That the plan under consideration would derive important advantages from its certainty, and that the moneys set apart for these purposes would be more judiciously applied and economically expended under the direction of the State legislatures, in which every part of each State is immediately represented, can not, I think, be doubted.  In the new States particularly, where a comparatively small population is scattered over an extensive surface, and the representation in Congress consequently very limited, it is natural to expect that the appropriations made by the Federal Government would be more likely to be expended in the vicinity of those members through whose immediate agency they were obtained than if the funds were placed under the control of the legislature, in which every county of the State has its own representative.  This supposition does not necessarily impugn the motives of such Congressional representatives, nor is it so intended.  We are all sensible of the bias to which the strongest minds and purest hearts are, under such circumstances, liable.  In respect to the last objection—­its probable effect upon the dignity and independence of State governments—­it appears to me only necessary to state the case as it is, and as it would be if the measure proposed were adopted, to show that the operation is most likely to be the very reverse of that which the objection supposes.