present social system. It pays better, capital is accumulated more rapidly, by wasting a certain amount of human life, human health, human intellect, human morals, by producing and throwing away a regular percentage of human soot--of that thinking, acting dirt, which lies about, and, alas! breeds and perpetuates itself in foul alleys and low public houses, and all dens and dark places of the earth. But, as in the case of the manufactures, the Nemesis comes, swift and sure. As the foul vapours of the mine and the manufactory destroy vegetation and injure health, so does the Nemesis fall on the world of man; so does that human soot, these human poison gases, infect the whole society which has allowed them to fester under its feet. Sad, but not hopeless! Dark, but not without a gleam of light on the horizon! For I can conceive a time when, by improved chemical science, every foul vapour which now escapes from the chimney of a manufactory, polluting the air, destroying the vegetation, shall be seized, utilised, converted into some profitable substance; till the black country shall be black no longer, the streams once more crystal clear, the trees once more luxuriant, and the desert which man has created in his haste and greed shall, in literal fact, once more blossom as the rose. And just so can I conceive a time when, by a higher civilisation, formed on a political economy more truly scientific, because more truly according to the will of God, our human refuse shall be utilised, like our material refuse, when man, as man, even down to the weakest and most ignorant, shall be found to be (as he really is) so valuable, that it will be worth while to preserve his health, to develop his capabilities, to save him alive, body, intellect, and character, at any cost; because men will see that a man is, after all, the most precious and useful thing on the earth, and that no cost spent on the development of human beings can possibly be thrown away.