Note 1628 — Chapter X · THE PRINCIPATE
Reading edition
C.I.L. xiv. n. 3608 “hunc ... Caesar Aug. Vespasianus iterum cos. fecit”; Plin. Paneg. 77 (of Trajan) “praestare consulibus ipsum qui consules facit.” Mommsen (Staatsr. ii. p. 925) thinks that the change came with Nero.