Reading 1:And, sir, let it be remembered that a revenue system, grossly and palpably unequal in itself--a system which, under the most favorable modification, would levy the entire amount of the federal taxes from one-fifth part of the productions of the Union, while the other four-fifths are entirely exempted...that this is the substratum upon which has been reared this monstrous and iniquitous superstructure--the protecting system....Let me, then, beseech the advocates of that system...relieve...