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There were two sun-dials on different sides of the house, both the dial-plates of which were of stone; and on one the figures, so far as I could see, were quite worn off, but the gnomon still cast a shadow over it in such a way that I could judge that it was about noon. The other dial had some half-worn hour-marks, but no gnomon.
There were two sun-dials on different sides of the house, both the dial-plates of which were of stone; and on one the figures, so far as I could see, were quite worn off, but the gnomon still cast a shadow over it in such a way that I could judge that it was about noon. The other dial had some half-worn hour-marks, but no gnomon.
Yet even these were not constructed as they should have been. The hour-marks on the sun-dial were all made equal, instead of varying with the periods of the day, so that the length of the hour varied with the length of the day. The illuminated interval was divided into twelve equal parts; so that if the sun rose at five A.M., and set at eight P.M., each hour was equal to eighty minutes.
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