[Sect. 1.] Be it enacted by the people of the slate of Illinois represented in the general assembly. That there shall be appointed by the county commissioners in each and every county, at some session of their court, previous to the first day of August, one thousand eight hundred and twenty, some proper person, whose duty it shall be to take a list of all citizens, of all ages, and sexes, and color, within their respective counties, particularly noting whether white or black; and also noting particularly free male inhabitants above the age of twenty years.