His _Civilisation en France_, in five volumes, _Civilisation Européenne_, and _Essais sur l'Histoire de France_, each in one volume, are the fruits of these professional labours. The same profound thought, sagacious discrimination, and lucid view, are conspicuous in them all; but they possess different degrees of interest to the English reader. The _Civilisation en France_ is the groundwork of the whole, and it enters at large into the whole details, historical, legal, and antiquarian, essential for its illustration, and the proof of the various propositions which it contains. In the _Civilisation Européenne_, and _Essays on the History of France_, however, the general results are given with equal clearness and greater brevity. We do not hesitate to say, that they appear to us to throw more light on the history of society in modern Europe, and the general progress of mankind, from the exertions of its inhabitants, than any other works in existence; and it is of them, especially the first, that we propose to give our readers some account. The most important event which ever occurred in the history of mankind, is the one concerning which contemporary writers have given us the least satisfactory accounts. Beyond all doubt the overthrow of Rome by the Goths was the most momentous catastrophe which has occurred on the earth since the deluge; yet, if we examine either the historians of antiquity or the earliest of modern times, we find it wholly impossible to understand to what cause so great a catastrophe had been owing. What gave, in the third and fourth centuries, so prodigious an impulse to the northern nations, and enabled them, after being so long repelled by the arms of Rome, finally to prevail over it? What, still more, so completely paralysed the strength of the empire during that period, and produced that astonishing weakness in the ancient conquerors of the world, which rendered them the easy prey of those whom they had so often subdued? The ancient writers content themselves with saying, that the people became corrupted; that they lost their military courage; that the recruiting of the legions, in the free inhabitants of the empire, became impossible; and that the semi-barbarous tribes on the frontier could not be relied on to uphold its fortunes. But a very little reflection must be sufficient to show that there must have been much more in it than this, before a race of conquerors was converted into one of slaves; before the legions fled before the barbarians, and the strength of the civilized was overthrown by the energy of the savage world. For what prevented a revenue from being raised in the third or fourth, as well as the first or second centuries? Corruption in its worst form had doubtless pervaded the higher ranks in Rome from the Emperor downward; but these vices are the faults of the exalted and the affluent only; they never have, and never will, extend generally to the great body of the