Sec.[Section] 1. Be it enacted by the people of the State of Illinois, represented in the General Assembly, That Ira Minard,Read Ferson , Bela T. Hunt [,] and Darwin Millington, their heirs and assigns, be and they are hereby authorized to construct, build and continue a Mill dam across Fox river at the town of St. Charles, in the county of Kane between the land held by them to the hight[height] of seven seven feet above low water mark: Provided, said grant shall not be construed so as to prevent the State from improving said Fox river at that place by dams, locks or any other way at any time hereafter, for the purpose of Slack water navigation or otherwise.

Sec. 2. The said dam shall be constructed with a down Stream Slope of two feet horizontal to one foot perpendic^u^lar rise, well and sufficienly planked over for the purpose of allowing the safe passage of the descending trade of said river; and during the continuance of the said dam, said Slope shall be kept in good repair. This act to take effect from and after its passage.