Drawing of gear systems, depicting detail of 'Vitruvian' drives: (a) Verloren Vallei, Ceres (a lantern and a bridge-tree) and (b) Deeze Hoek, Piketberg (a wallower and a bridge-tree), Spur-wheel drives: (c) Elim, Bredasdorp ...

Drawing of the suggested restoration of a water-wheel, depicting detail of a wooden trough (launder), a 3 in x 4 in spoke, a trough, 4 iron bars, a shaft, a mill wall and a pit wheel. Details are also provided of a section ...