Sec.[Section] 1. Be it enacted by the people of the State of Illinois, represented in the General Assembly, That Thomas S. Garvin and Robert McClelland, proprietors of the town of Washington, lying in the county of Fulton and situated on the west half of section twenty four in township three north of range one, east of the fourth principal meridian, be, and they are hereby authorized to vacate the survey and plat of said town of Washington: Provided, said Thomas S. Garvin and Robert McClelland, the proprietors of said town, shall first, in writing duly signed, sealed and recorded in the recorders office of said county, signify their consent thereto: and provided also, that vacating the survey and plat of said town, shall not interfere with the vested rights of any person or persons who may have purchased lots in said town, of the proprietors or others.