Nothing is more certain than that the intellectual adaptability of the individual man is very limited. A ruling class is seldom conscious of its own decay, and most of the worst catastrophes of history have been caused by an obstinate resistance to change when resistance was no longer possible. Thus while an incessant alteration in social equilibrium is inevitable, a revolution is a problem in dynamics, on the correct solution of which the fortunes of a declining class depend. For example, the modern English landlords replaced the military feudal aristocracy during the sixteenth century, because the landlords had more economic capacity and less credulity. The men who supplanted the mediaeval soldiers in Great Britain had no scruple about robbing the clergy of their land, and because of this quality they prospered greatly. Ultimately the landlords reached high fortune by controlling the boroughs which had, in the Middle Ages, acquired the right to return members to the House of Commons. Their domination lasted long; nevertheless, about 1760, the rising tide of the Industrial Revolution brought forward another type of mind. Flushed by success in the Napoleonic wars the Tories failed to appreciate that the social equilibrium, by the year 1830, had shifted, and that they no longer commanded enough physical force to maintain their parliamentary ascendancy. They thought they had only to be arrogant to prevail, and so they put forward the Duke of Wellington as their champion. They could hardly have made a poorer choice. As Disraeli has very truly said, "His Grace precipitated a revolution which might have been delayed for half a century, and need never have occurred in so aggravated a form." The Duke, though a great general, lacked knowledge of England. He began by dismissing William Huskisson from his Cabinet, who was not only its ablest member, but perhaps the single man among the Tories who thoroughly comprehended the industrial age. Huskisson's issue was that the franchise of the intolerably corrupt East Retford should be given to Leeds or Manchester. Having got rid of Huskisson, the Duke declared imperiously that he would concede nothing to the disfranchised industrial magnates, nor to the vast cities in which they lived. A dissolution of Parliament followed and in the election the Tories were defeated. Although Wellington may not have been a sagacious statesman, he was a capable soldier and he knew when he could and when he could not physically fight. On this occasion, to again quote Disraeli, "He rather fled than retired." He induced his friends to absent themselves from the House of Lords and permit the Reform Bill to become law. Thus the English Tories, by their experiment with the Duke of Wellington, lost their boroughs and with them their political preeminence, but at least they saved themselves, their families, and the rest of their property. As a class they have survived to this day, although shorn of much of the