It was the question of the tariff which showed more clearly than anything else the influence of the interests of slavery in the attitude which the slaveholders would finally take toward the industrial policies of the nation, and which would contribute more than anything else to the division of the Republican party from the point of view of principle. [Sidenote: The Tariff of 1824 a failure.] The great purpose of the Tariff of 1824 was to give the American manufacturers of coarse woollens a substantial control of the home markets. In two years of trial this result had not been realized. A vast amount of capital had been transferred from other enterprises to build new woollen mills, and the markets were so glutted with their fabrics that sale for them could only be found by virtually excluding foreign goods of the same material and grade. It was claimed that the foreign goods were sold upon foreign account, and not by _bona fide_ American merchants, and that the goods were thus undervalued by the fictitious parties to the importation, and the duty thus so largely avoided as to make the importation practically free. It was, therefore, contended that the agent of the foreign manufacturer or merchant was ruining the American manufacturer, on the one hand, and the American merchant, on the other. President Adams himself, in his message of December 5th, 1826, referred to the frauds thus committed on the revenue. The {158} manufacturers of woollens in New England and Pennsylvania memorialized Congress, during the latter part of the year 1826, representing themselves to be in dire distress and praying for aid. These memorials were referred to the Committee on Manufactures of the House of Representatives for report. On January 10th, 1827, the chairman of this committee, Mr. Mallary, of Vermont, introduced a bill to meet the difficulties above described. [Sidenote: The Tariff Bill of 1827.] This bill proposed to introduce a system of minimal valuations at the custom-house instead of taking the foreign invoice as the basis for the levy of the duty, as was the existing practice, and it placed the valuation of coarse woollens so high as practically to prohibit their importation. The bill proposed, however, to raise the tariff on wool to such a rate as would deprive the manufacturers very largely of the benefit to be secured by the system of minimal valuations. It was questionable whether the manufacturers would get any very material aid out of this bill, which contained so high a rate of duty upon the raw material, but it was necessary to incorporate the provision in order to secure the support of the West to the measure. [Sidenote: Development of the industrial antithesis between the North and the South.]