I. There is first the hot fermentation and unwholesome secrecy of the population crowded into large cities, each mote in the misery lighter, as an individual soul, than a dead leaf, but becoming oppressive and infectious each to his neighbor, in the smoking mass of decay. The resulting modes of mental ruin and distress are continually new; and in a certain sense, worth study in their monstrosity: they have accordingly developed a corresponding science of fiction, concerned mainly with the description of such forms of disease, like the botany of leaf-lichens. In De Balzac's story of _Father Goriot_, a grocer makes a large fortune, of which he spends on himself as much as may keep him alive; and on his two daughters, all that can promote their pleasures or their pride. He marries them to men of rank, supplies their secret expenses, and provides for his favorite a separate and clandestine establishment with her lover. On his death-bed, he sends for this favorite daughter, who wishes to come, and hesitates for a quarter of an hour between doing so, and going to a ball at which it has been for the last month her chief ambition to be seen. She finally goes to the ball. The story is, of course, one of which the violent contrasts and spectral catastrophe could only take place, or be conceived, in a large city. A village grocer cannot make a large fortune, cannot marry his daughters to titled squires, and cannot die without having his children brought to him, if in the neighborhood, by fear of village gossip, if for no better cause. 6. II. But a much more profound feeling than this mere curiosity of science in morbid phenomena is concerned in the production of the carefulest forms of modern fiction. The disgrace and grief resulting from the mere trampling pressure and electric friction of town life, become to the sufferers peculiarly mysterious in their undeservedness, and frightful in their inevitableness. The power of all surroundings over them for evil; the incapacity of their own minds to refuse the pollution, and of their own wills to oppose the weight, of the staggering mass that chokes and crushes them into perdition, brings every law of healthy existence into question with them, and every alleged method of help and hope into doubt. Indignation, without any calming faith in justice, and self-contempt, without any curative self-reproach, dull the intelligence, and degrade the conscience, into sullen incredulity of all sunshine outside the dunghill, or breeze beyond the wafting of its impurity; and at last a philosophy develops itself, partly satiric, partly consolatory, concerned only with the regenerative vigor of manure, and the necessary obscurities of fimetic Providence; showing how everybody's fault is somebody else's, how infection has no law, digestion no will, and profitable dirt no dishonor.