there were now _two Englands_, alike prepared to work with might and main toward the political regeneration of mankind. Let us consider now to what conclusions the rapidity and unabated steadiness of the increase of the English race in America must lead us as we go on to forecast the future. Carlyle somewhere speaks slightingly of the fact that the Americans double their numbers every twenty years, as if to have forty million dollar-hunters in the world were any better than to have twenty million dollar-hunters! The implication that Americans are nothing but dollar-hunters, and are thereby distinguishable from the rest of mankind, would not perhaps bear too elaborate scrutiny. But during the present lecture we have been considering the gradual transfer of the preponderance of physical strength from the hands of the war-loving portion of the human race into the hands of the peace-loving portion,--into the hands of the dollar-hunters, if you please, but out of the hands of the scalp-hunters. Obviously to double the numbers of a pre-eminently industrious, peaceful, orderly, and free-thinking community, is somewhat to increase the weight in the world of the tendencies that go towards making communities free and orderly and peaceful and industrious. So that, from this point of view, the fact we are speaking of is well worth considering, even for its physical dimensions. I do not know whether the United States could support a population everywhere as dense as that of Belgium; so I will suppose that, with ordinary improvement in cultivation and in the industrial arts, we might support a population half as dense as that of Belgium,--and this is no doubt an extremely moderate supposition. Now a very simple operation in arithmetic will show that this means a population of fifteen hundred millions, or more than the population of the whole world at the present date. Another very simple operation in arithmetic will show that if we were to go on doubling our numbers, even once in every twenty-five years, we should reach that stupendous figure at about the close of the twentieth century,--that is, in the days of our great-greatgrandchildren. I do not predict any such result, for there are discernible economic reasons for believing that there will be a diminution in the rate of increase. The rate must nevertheless continue to be very great, in the absence of such causes as formerly retarded the growth of population in Europe. Our modern wars are hideous enough, no doubt, but they are short. They are settled with a few heavy blows, and the loss of life and property occasioned by them is but trifling when compared with the awful ruin and desolation wrought by the perpetual and protracted contests of antiquity and of the Middle Ages. Chronic warfare, both private and public, periodic famines, and sweeping pestilences like the Black Death,--these were the things which formerly shortened human life and kept down population.