o that no one might seem excluded from the right of
voting, and yet the whole power might reside in the chief men of the
state. For the knights were first called to vote, and then the eighty
centuries of the first class, consisting of the first class of the
infantry: if there occurred a difference of opinion among them, which
was seldom the case, the practice was that those of the second class
should be called, and that they seldom descended so low as to come
down to the lowest class. Nor need we be surprised, that the present
order of things, which now exists, after the number of the tribes was
increased to thirty-five, their number being now double of what it
was, should not agree as to the number of centuries of juniors and
seniors with the collective number instituted by Servius Tullius. For
the city being divided into four districts, according to the regions
and hills which were then inhabited, he called these divisions,
tribes, as I think, from the tribute. For the method of levying taxes
ratably according to the value of property was also introduced by him:
nor had these tribes any relation to the number and distribution of
the centuries.

The census being now completed, which he had brought to a speedy close
by the terror of a law passed in reference to those who were
not rated, under threats of imprisonment and death, he issued a
proclamation that all the Roman citizens, horse and foot, should
attend at daybreak in the Campus Martius, each in his century. There
he reviewed the whole army drawn up in centuries, and purified it by
the rite called Suovetaurilia,[43] and that was called the closing
of the lustrum, because it was the conclusion of the census. Eighty
thousand citizens are said to have been rated in that survey. Fabius
Pictor, the most ancient of our historians, adds that that was the
number of those who were capable of bearing arms. To accommodate that
vast population the city also seemed to require enlargement. He took
in two hills, the Quirinal and Viminal; then next he enlarged the
Esquiline, and took up his own residence there, in order that dignity
might be conferred upon the place. He surrounded the city with a
rampart, a moat, and a wall:[44] thus he enlarged the pomerium. Those
who regard only the etymology of the word, will have the pomerium to
be a space of ground behind the walls: whereas it is rather a space
on each side of the wall, which the Etruscans, in building cities,
formerly cons