Although the mill is no longer in operation, a hole in the building s north wall allows visitors to view the working equipment of what is thought to be Ontario s last overshot water wheel.
22.
The Upper Barrow Mill, which had an Overshot water wheel, was a Gristmill which is known to have been operating in 1839 . By 1866 it was running as a corn mill, and ceased operation by 1935.
23.
The Scotch ( reaction ) turbines, which later replaced the overshot water wheels, were 12?feet in diameter, were made of cast iron, and could pull the boats up an 11 % grade ( 11 foot rise over 100 feet ).
24.
:" " A square pile of buildings erected around a courtyard, with all the water used in the works coming from a mill dam supplied from the upper reaches of the river; an overshot water wheel does all the driving power.
25.
The mill was restored to working condition in 1998 including turning the overshot water wheel around to become a high-breast one and was used to grind corn on an open day in 1999 . After Chalgrove, the Brook flows through Stadhampton and then Chiselhampton where it joins the River Thame, a tributary of the River Thames.
