Be it enacted by the Legislative Council and House of Representatives of the Illinois Territory, and it is hereby enacted by the authority of the same, That all that part of the counties of Randolph and Johnson included within the following bounds to wit : Begining at the mouth of Big Muddy river and running up the same to the township line between ten and eleven ; thence east with said line to the principal meridian line running from the mouth of the Ohio river; thence north with the meridian line thirty miles; thence west twenty four miles to the corner of range between four and five west of the principal meridian line ; thence south six miles to the township corner between six and seven ; thence to the head waters of the creek called Gagnic, and down it to the Mississippi ; thence down the Mississippi to the beginning, shall be a seperate and distinct county and called and known by the name of Jackson