THE ROMAN ARMY IN THE TIME OF C. MARIUS.
Cicero, De Officiis, ii. 21; Marquardt, Handbuch der Römischen
Alterthümer, Das Militärwesen, iii. Th. 2. Abth.; Lipsius, De Militia
Romana, Opera, tom. iii.; Rüstow, Heerwesen und Kriegführung C.
Julius Cäsars; Caesar, Commentarii; Polybius, lib. vi.; Frontinus,
iv. 1. 7.
The tribune L. Marcius Philippus, and his remark on the concentra-
tion of property in a few hands-Change in the Roman military system