began to decline. In the clear light of the new order it was seen that they were not fit dwelling-places for men, either in the complicated and luxurious palaces where the rich fenced themselves from their kind, or in the vast tenements, towering height upon height, ten and twelve stories up, where the swarming poor festered in vice and sickness and famine. If I were to tell you of the fashion of those cities of our egoistic epoch, how the construction was one error from the first, and every correction of an error bred a new defect, I should make you laugh, I should make you weep. We let them fall to ruin as quickly as they would, and their sites are still so pestilential, after the lapse of centuries, that travellers are publicly guarded against them. Ravening beasts and poisonous reptiles lurk in those abodes of the riches and the poverty that are no longer known to our life. A part of one of the less malarial of the old cities, however, is maintained by the commonwealth in the form of its prosperity, and is studied by antiquarians for the instruction, and by moralists for the admonition it affords. A section of a street is exposed, and you see the foundations of the houses; you see the filthy drains that belched into the common sewers, trapped and re-
