Men of the Clay-Adams school argued that the tariff stimulated industry, doubled the profits of agriculture, augmented wealth, and hence promoted the well-being of the nation as a whole. The Southern planter was never able to discover in the protective system any real advantage for himself, but as long as the tariffs were moderate he was influenced by nationalistic sentiment to accept them. The demand for protection on the part of the Northern manufacturers seemed, however, insatiable. An act of 1824 raised the duties on cotton and woolen goods. A measure of 1827 which applied to woolens the ruinous principle already applied to cottons was passed by the House and was laid on the table in the Senate only by the casting vote of Vice President Calhoun. The climax was reached in the Tariff Act of 1828, which the Southerners themselves loaded with objectionable provisions in the vain hope of making it so abominable that even New England congressmen would vote against it. A few years of such legislation sufficed to rouse the South to a deep feeling of grievance. It was no longer a question of reasonable concession to the general national good. A vast artificial economic system had been set up, whose benefits accrued to the North and whose burdens fell disproportionately upon the South. The tone and temper of the manufacturing sections and of the agricultural West gave no promise of a change of policy. The obvious conclusion was that the planting interests must find some means of bringing pressure to bear for their own relief. The means which they found was nullification; and it fell to South Carolina, whose people were most ardent in their resentment of anything that looked like discrimination, to put the remedy to the test. The Legislature of this State had made an early beginning by denouncing the tariff of 1824 as unconstitutional. In 1827 Robert J. Turnbull, one of the abler political leaders, published under the title of The Crisis a series of essays in which he boldly proclaimed nullification as the remedy. In the following summer Calhoun put the nullification doctrine into its first systematic form in a paper--the so-called Exposition--which for some time was known to the public only as the report of a committee of the Legislature.