On July 10, Edmund Randolph called for a regular census on which to base future reallocation of House seats. During the debate on the census, South Carolina delegates Pierce Butler and Charles Cotesworth Pinckney sought to replace the three-fifths ratio with a full count of the slave population. They argued that slave property contributed to the wealth of the Southern states and as such should be used in calculating representation. This irritated Northern delegates already reluctant to support the three-fifths compromise. James Wilson, one of the authors of the three-fifths compromise, asked, "Are slaves to be admitted as Citizens? Then why are they not admitted on an equality with White Citizens? Are they admitted as property? Then why is not other property admitted into the computation?"