The Distribution of the Apartments different among the Greeks and Romans; what the Difference was, [142.]

Chap. III. Of things that equally appertain to Publick and Private Buildings.

Art. 1. Of Aqueducts, [143.]

The manner the Ancients used to take the Level exactly, [143.] The Water was brought by Aqueducts, or by Pipes of Lead, or Potters Work, [144.]

Art. 2. Of Wells and Cisterns, [145.]

The Precautions the Ancients used in digging their Wells, to discover bad Water, and in making their Cisterns, [145.]

Art. 3. Of Machines for carrying and lifting up great Stones and Burthens, [146.]

Machines for drawing Pillars, [147.] Architraves, [147.] for raising great Weights, three sorts; first, with a Handmill; second, with a Windlas, [147.] third, with several Ropes, to be drawn by Mens Hands, [148.]

Art. 4. Of Machines for elevating Waters, [149.]

Five sorts; I. The Tympan, [149.] II. A Wheel with Boxes. III. A Chain with Buckets. IV. The Vice of Archimedes. V. The Pomp of Cresibius, [151.]