296 



BOOK VIII. 



A FIRST MILL. B WHEEL TURNED BY GOATS. C SECOND MILL. D Disc OF 



UPRIGHT AXLE. E ITS TOOTHED DRUM. F THIRD MILL. G SHAPE OF LOWER 



MILLSTONE. H SMALL UPRIGHT AXLE OF THE SAME. I ITS OPENING. K LEVER 



OF THE UPPER MILLSTONE. L ITS OPENING. 



