the means of making a living. The importation of raw materials, and
that of goods of all kinds, which was constantly on the increase
throughout Roman history, called for the employment of vast numbers of
porters, carriers, and what we should call dock hands, working both
at Ostia, where the heavier ships were unladed or relieved of part of
their cargoes in order to enable them to come up the Tiber,[94] and
also at the wharves at Rome under the Aventine. We must also remember
that almost all porterage in the city had to be done by men, with the
aid of mules or donkeys; the streets were so narrow that in trying to
picture what they looked like we must banish from our minds the
crowds of vehicles familiar in a modern city. Julius Caesar, in his
regulations for the government of the city of Rome, forbade waggons to
be driven in the streets in the day-time.[95] Even supposing that a
large amount of porterage was done by slaves for their masters, we may
reasonably guess that free labour was also employed in this way at
Rome, as was certainly the case at Ostia, and also at Pompeii, where
the pack-carriers (_saccarii_) and mule-drivers (_muliones_) are among
the corporations of free men who have left in the form of _graffiti_
appeals to voters to support a particular candidate for election to a
magistracy.[96]

Thus we may safely conclude that there was a very considerable amount
of employment in Rome available for the poorer citizens, quite apart
from the labour performed by slaves. But before closing this chapter
it is necessary to point out the precarious conditions under which
that employment was carried on, as compared with the industrial
conditions of a modern city. It is true enough that the factory system
of modern times, with the sweating, the long hours of work, and the
unwholesome surroundings of our industrial towns, has produced much
misery, much physical degeneracy; and we have also the problem of the