Invention and Engineering
A horse mill (or in the UK commonly called a horse-gin - short for "engine") is a mill, sometimes used in conjunction with a watermill or windmill, that uses a horse engine as the power source. Any milling process can be powered in this way, but the most frequent use of animal power in horse mills was for grinding grain and pumping water. Other animal engines for powering mills are powered by dogs, donkeys, oxen or camels. Treadwheels are engines powered by humans.
DSER 15 and 16.
Double heading.
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