Although, however, these public distributions of grain in the chief towns of the empire had some effect in checking the cultivation of corn in Italy, Greece, and Asia Minor, by depriving its cultivators of their best market, yet _the private importation of grain_ from these great corn countries must have been a far more serious and general evil. Gibbon states the number who received rations at Constantinople daily in the time of Constantine at 80,000, and in Rome in the time of Tiberius it was 180,000. Supposing the other great towns were fed in the same proportion, perhaps a million of persons in the Roman world were nourished at the expense of the state on Egyptian or African grain. But a million of persons consume annually a million of quarters of grain; not a sixtieth part of the annual consumption of the British empire at this time, and probably not a two-hundredth part required by the 120,000,000 souls who composed the Roman empire in the days of the Antonines. But though the state paupers were thus but a small fraction of the whole consumers of foreign grain, yet the _general importation was immense_, and became erelong so great as to constitute the entire source from which the population of Italy, as well as Constantinople and the adjacent provinces of Romelia, Macedonia, and Greece, were fed. It was this _general importation_, not the gratuitous distributions, which ruined Italian agriculture; for it alone was on a scale commensurate with the population of the Italian peninsula, and could alone account for its general ruin. Tacitus expressly says, it was the _preference_ given to African agriculture, not the gratuitous distributions, which destroyed Italian cultivation. "At, Hercule, olim ex Italia legionibus longinquas in provincias commeatus portabantur: nec nunc infecunditate laboratur; _sed Africam_ POTIUS _et Egyptum excercemus, navibusque et casibus vita populi Romani permissa est_.[55]" The supply of grain for the Roman world was entirely obtained from Spain, Sicily, Africa, and Egypt, while Greece was maintained by corn imported from Poland.[56] It was not that the Italian and Grecian fields had become sterile: Tacitus expressly says the reverse,--"_nec_ nunc infecunditate laboratur." But the country in which grain produced fifteen fold, as Italy did, could not compete with that which produced sixty or eighty fold, on the banks of the Nile. Nor could the industry of the centre of the empire, where money was plentiful, comparatively speaking, and labour was therefore dear, stand against the competition of the remoter provinces, where it was scarce, and labour was therefore cheap.