those within a circle supposed to be measured by the reach of his voice, should be put to death, shows us the small value of the life of these unfortunates, and the facility with which they could be replaced. Their vast numbers necessarily made every citizen a soldier; the culture of the land and the manufacturing processes, the pursuits of labour and industry, were assigned to them with contempt. The relation of the slave in such a social system is significantly shown by the fact that the courts estimated the amount of any injury he had received by the damage his master had thereby sustained. To such a degree had this system been developed, that slave labour was actually cheaper than animal labour, and, as a consequence, much of the work that we perform by cattle was then done by men. The class of independent hirelings, which should have constituted the chief strength of the country, disappeared, labour itself becoming so ignoble that the poor citizen could not be an artisan, but must remain a pauper--a sturdy beggar, expecting from the state bread and amusements. The personal uncleanness and shiftless condition of these lower classes were the true causes of the prevalence of leprosy and other loathsome diseases. Attempts at sanitary improvement were repeatedly made, but they so imperfectly answered the purpose that epidemics, occurring from time to time, produced a dreadful mortality. Even under the Cæsars, after all that had been done, there was no essential amendment. The assertion is true that the Old World never recovered from the great plague in the time of M. Antoninus, brought by the army from the Parthian War. In the reign of Titus ten thousand persons died in one day in Rome. The slave system bred that thorough contempt for trade which animated the Romans. They never grudged even the Carthaginians a market. It threw them into the occupation of the demagogue, making them spend their lives, when not engaged in war, in the intrigues of political factions, the turbulence of public elections, the excitement of lawsuits. They were the first to discover that the privilege of interpreting laws is nearly equal to that of making them; and to this has been rightly attributed their turn for jurisprudence, and the prosperity of advocates among them. The disappearance of the hireling class was the immediate cause of the downfall of the republic and the institution of the empire, for the aristocracy were left without any antagonist, and therefore without any restraint. They broke up into factions, involving the country in civil war by their struggles with each other for power. [Sidenote: The war system.]