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 Copyright by Brown Bros. Wheat after it is drawn from the bins, is conducted through the scouring machine represented in this picture. Here it is thoroughly cleaned from such impurities as may stick to the kernels of wheat. When thus thoroughly cleaned and polished, the wheat is steamed and sent through the grinding rolls.

Copyright by Brown Bros. These striking looking machines are called dust collectors. The dust from the wheat and also the fine flour dust which accumulates are drawn off by a process of suction pipes which convey the dust to these machines. From them it is sucked away to the refuse cans.