This feature recurs at Aosta and at Laibach (pp.

90, 116), both founded, like Turin, in the Augustan age, and seems to belong to that period; later, it gave place to the rounded angle visible at Timgad (p.

109) and in many Roman forts of the middle Empire.
[71] Carlo Promis, _Storia dell' antico Torino_ (Torino, 1869); Alfredo d'Andrade, _Relazione dell' ufficio regionale per la conservazione dei monumenti del Piemonte_, 1883-91 (Torino, 1899); Schultze, _Bonner Jahrbuecher_, cxviii.

339; Barthel, _ibid_.cxx.

105; Pianta di Torino (1-10,000), by G.B.