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 — TtS OPENING. 



