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Rh {|class="__figimg" Fig. 174.—Power-wheel shelter on bank of canal, in Kiangsu province, China.
 * [[Image:Farmers of forty centuries - Power-wheel shelter, Kiangsu, China.jpg|600px]]
 * }

Fig. 175.—Large current water-wheel in use in Szechwan province, China.

Photograph by Rollin T. Chamberlin.