The two great symptoms which immediately impress our imagination are a decline, real or apparent, in the numbers of the free population of Rome, and the introduction of new methods of agriculture which entailed a diminution in the class of freehold proprietors who had held estates of small or moderate size. The evidence for an actual decline of the population must be gathered exclusively from the Roman census lists.[171] At first sight these seem to tell a startling tale. At the date of the outbreak of the First Punic War (265 B.C.) the roll of Roman citizens had been given as 382,284,[172] at a census held but three years before the tribunate of Tiberius Gracchus (136 B.C.) the numbers presented by the list were 307,833.[173] In 129 years the burgess roll had shrunk by nearly 75,000 heads of the population. The shrinkage had not always been steadily progressive; sometimes there is a sudden drop which tells of the terrible ravages of war. But the return of peace brought no upward movement that was long maintained. In the interval of comparative rest which followed the Third Macedonian War the census rolls showed a decrease of about 13,000 in ten Years.[174] Seven years later 2,000 more have disappeared,[175] and a slight increase at the next _lustrum_ is followed by another drop of about 14,000.[176] The needs of Rome had increased, and the means for meeting them were dwindling year by year. This must be admitted, however we interpret the meaning of these returns. A hasty generalisation might lead us to infer that a wholesale diminution was taking place in the population of Rome and Italy. The returns may add weight to other evidence which points this way; but, taken by themselves, they afford no warrant for such a conclusion. The census lists were concerned, not only purely with Roman citizens, but purely with Roman citizens of a certain type. It is practically certain that they reproduce only the effective fighting strength of Rome,[177] and take no account of those citizens whose property did not entitle them to be placed amongst the _classes_.[178] But, if it is not necessary to believe that an actual diminution of population is attested by these declining numbers, the conclusion which they do exhibit is hardly less serious from an economic and political point of view. They show that portions of the well-to-do classes were ceasing to possess the property which entitled them to entrance into the regular army, and that the ranks of the poorer proletariate were being swelled by their impoverishment. It is possible that such impoverishment may have been welcomed as a boon by the wearied veterans of Rome and their descendants. It meant exemption from the heavier burdens of military service, and, if it went further still, it implied immunity from the tribute as long as direct taxes were collected from Roman citizens.[179] As long as service remained a burden on wealth, however moderate, there could have been little inducement to the man of small