Sec[Section] 1 Be it enacted by the people of the State of Illinois represented in the General Assembly That Allen P Hubbard and his associates heirs and assigns be and they are hereby authorised to construct and build a Mill dam across Fox River on Sections Twenty seven and Twenty eight Township Thirty nine north Range Eight East of the Third Principal Meridian in the County of Kane to the height of six 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 Provided however that said dam be not so constructed as to interrupt the free navigation of said River

Sec 2 The said dam shall be constructed with a down stream sloop of two feet horisontal to one foot perpendicular rise, well, and sufficiently planked over, for the purpose of allowing a safe passage to the decending trade of the said River and during the continuance of said dam said sloop shall be kept in good repair

Sec 3 All acts and parts of acts heretofore passed by the General Assembly of this State authorising individuals or Companies to build dams across said Fox River are hereby repealed unless the proprietors thereof shall within one year from the passage of this act construct a sloop in

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the same manner as set forth in the Second section of this act

Sec 4 This act shall take affect from and after its passage