Art. 2. _Of the Vestibulum or Entry_, 139. _The proportion of the Vestibulum was taken three ways, for the length, breadth, and heighth_, 139. _Of the Alley in the middle_, 140. Art. 3. _Of Halls_, 140. _Three sorts of Halls, the_ Corinthian, _the_ AEgyptian, _and the_ Cyzican, 141. Art. 4. _Of the Distribution of the Apartments among the Ancients_, 142. _The Distribution of the Apartments different among the_ Greeks _and_ Romans; _what the Difference was_, 141. _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. Art. 5. _Of Water-mills for grinding Corn_, 152. _The Water-mills of the Ancients were like ours._ Art. 6. _Of other Hydraulick Machines_, 153. _Three sorts of Water-Machines; first, for shewing the hour_, 153. _Second, Organs_, 154. _Third, for measuring the Way by Water_, 154. _by Land_, 155. Art. 7. _Of Machines of War_, 155. _Three kinds; I. To dart Arrows, &c._ 155. _II. To batter down Walls_, 157. _III. To cover them in their Approaches to the Walls of the Besieged_, 158. AN ABRIDGMENT OF THE TEN BOOKS OF THE ARCHITECTURE OF VITRUVIUS. THE INTRODUCTION. ARTICLE I. _Of the great Merits of_ Vitruvius, _and the Excellencies of his Works_.