Flavius Josephus, The Wars of the Jews or History of the Destruction of Jerusalem (75), BOOK VI Containing The Interval Of About One Month From The Great Extremity To Which The Jews Were Reduced To The Taking Of Jerusalem By Titus, CHAPTER 8 How Caesar Raised Banks Round About The Upper City Mount Zion And When They Were Completed Gave Orders That The Machines Should Be Brought He Then Possessed Himself Of The Whole City