The multitude then proceeded to go into enclosures like cattle-pens according to their tribes, and each tribe voted upon the measure under consideration. The decision was then taken not by the majority of the citizens, but by the majority of tribes, and it was announced by the heralds.
The Popular Assembly by centuries, comitia centuriata, was very similar in its character, except that instead of thirty-five tribes there were, in the third century B.C., 373 centuries, and there was a sacrifice as well as prayer to begin with. The centuries, originally military (like the "hundreds" of primitive English local government), had long since lost any connection with the number one hundred. Some contained only a few people; some very many. There were eighteen centuries of knights (equites), who were originally men in a position to maintain a horse and serve in the cavalry, though later the Roman knighthood, like knighthood in England, became a vulgar distinction of no military, mental, or moral significance. (These equites became a very important class as Rome traded and grew rich; for a time they were the real moving class in the community. There was as little chivalry left among them at last as there is in the "honours list" knights of England of to-day. The senators from about 200 B.C. were excluded from trade. The equites became, therefore, the great business men, negotiatores, and as publicani they farmed the taxes.) There were, in addition, eighty (!) centuries of wealthy men (worth over 100,000 asses), twenty-two of men worth over 75,000 asses, and so on. There were two centuries each of mechanics and musicians, and the proletarii made up one century. The decision in the comitia centuriata was by the majority of centuries.
Is it any wonder that with the growth of the Roman state and the complication of its business, power shifted back from such a Popular Assembly to the Senate, which was a comparatively compact body varying between three hundred as a minimum, and, at the utmost, nine hundred members (to which it was raised by Cæsar), men who had to do with affairs and big business, who knew each other more or less, and had a tradition of government and policy? The power of nominating and calling up the senators vested in the Republic first with the consuls, and when, some time