The Effect of the Bii.t. Basixo. IJepresex tatiox it-ox Voters.—The radicals, who are now clamoring for an amendment to the Con stitution changing the representation in Con gress' from a population to a voting basis, [their object being to compel the South to make the negroes voters] do not quite realize the effect of that measure were it adopted. True, it would largely reduce the representa tion of the Southern States were the negroes