In adjusting the duties on imports to the object of revenue the influence of the tariff on manufactures will necessarily present itself for consideration. However wise the theory may be which leaves to the sagacity and interest of individuals the application of their industry and resources, there are in this as in other cases exceptions to the general rule. Besides the condition which the theory itself implies of reciprocal adoption by other nations, experience teaches that so many circumstances must concur in introducing and maturing manufacturing establishments, especially of the more complicated kinds, that a country may remain long without them, although sufficiently advanced and in some respects even peculiarly fitted for carrying them on with success. Under circumstances giving a powerful impulse to manufacturing industry it has made among us a progress and exhibited an efficiency which justify the belief that with a protection not more than is due to the enterprising citizens whose interests are now at stake it will become at an early day not only safe against occasional competitions from abroad, but a source of domestic wealth and even of external commerce. In selecting the branches more especially entitled to the public patronage a preference is obviously claimed by such as will relieve the United States from a dependence on foreign supplies, ever subject to casual failures, for articles necessary for the public defense or connected with the primary wants of individuals. It will be an additional recommendation of particular manufactures where the materials for them are extensively drawn from our agriculture, and consequently impart and insure to that great fund of national prosperity and independence an encouragement which can not fail to be rewarded. Among the means of advancing the public interest the occasion is a proper one for recalling the attention of Congress to the great importance of establishing throughout our country the roads and canals which can best be executed under the national authority. No objects within the circle of political economy so richly repay the expense bestowed on them; there are none the utility of which is more universally ascertained and acknowledged; none that do more honor to the governments whose wise and enlarged patriotism duly appreciates them. Nor is there any country which presents a field where nature invites more the art of man to complete her own work for his accommodation and benefit.