A bill to amend an act passed in the tenth and eleventh years of the reign of King William the Third, intituled, "An Act for the Making and Keeping Navigable the Rivers of Aire and Calder, in the County of York," : and for improving the navigation of the said River Aire, from Weeland to the River Ouze, and for making a navigable canal from the said River Aire, at or near Haddlesey, to the River Ouze, at or near the town of Selby, in the said county.