One is tempted to apply the theory of human crops to the case of the chair of history at Cambridge. Prof. Seeley's theory is an edifying variant on that of Mr. Balfour. Where one thesis finds the key to all in the emperor, the other sees failure of the human harvest the moment the imperial succession goes wrong. And while the Professor offers the semblance of a reason for the alleged failure in the human breed, it is really too nugatory for discussion. If the "barbarous nations" alluded to were Gaul and Spain, they had suffered the "abrupt introduction of civilisation" more than two hundred years before. Egypt and Syria and Greece and North Africa had older civilisations than the Roman. Germany was not decadent. The decay of industrial life in Italy had begun long before the Empire. As well might we say that a bad human crop there had preceded the Etruscan conquest, the invasion by Hannibal, and the civil wars. To cite, as does Prof. Seeley, the pestilence of the year 166 as a beginning of depopulation, is to ignore the problem of three hundred years of previous depopulation in Italy, and to set up a misconception as to the rest of the Empire. According to Gibbon, the long pestilence of the years 250-265 was the worst of all.[435] More plausibly, Prof. Seeley goes on to argue that "what the plague had been to the population, that the _fiscus_ was to industry. It broke the bruised reed; it converted feebleness into utter and incurable debility. Roman finance had no conception of the impolicy of laying taxation so as to depress enterprise and trade. The _fiscus_ destroyed capital in the Roman Empire. The desire of accumulation languished where the Government lay in wait for all savings--_locupletissimus quisque in prædam correptus_. All the intricate combinations by which man is connected to man in a progressive society disappeared."[436] But this is a finally excessive description of a process which had been in full swing in the time of Cicero, and which subsisted for three hundred years after Marcus Aurelius in the West. A generation after Marcus came the powerful Severus, whose son Caracalla could find millions of money to build his immense baths at Rome, still monstrous in their ruins; and seventy years after Caracalla, Diocletian, wielding the Empire at its utmost extension, could build still vaster baths for the imperial city at which he had ceased to dwell. With a debased silver coinage,[437] the emperors of that day seemed to feel no fatal lack of real revenue, and maintained, at great cost, huge armies for the control and defence of their enormous realm.