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15The hole being lowered through the space of Scorpio and Sagittarius, in its revolution it returns to the eighth division of Capricornus, and, by the velocity of the water, the winter hours are produced. To the best of my ability I have explained the construction and proportions of dials, so that they may be easily set up. It now remains for me to speak of machines, and the principles which govern them. These will be found in the following book, and will complete this Treatise on Architecture.
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