Private enterprise--conscience, to put it in the category of duties, where it belongs--must do the lion's share under these last two heads. Of what the law has effected I have spoken already. The drastic measures adopted in Paris, in Glasgow, and in London are not practicable here on anything like as large a scale. Still it can, under strong pressure of public opinion, rid us of the worst plague-spots. The Mulberry Street Bend will go the way of the Five Points when all the red tape that binds the hands of municipal effort has been unwound. Prizes were offered in public competition, some years ago, for the best plans of modern tenement-houses. It may be that we shall see the day when the building of model tenements will be encouraged by subsidies in the way of a rebate of taxes. Meanwhile the arrest and summary punishment of landlords, or their agents, who persistently violate law and decency, will have a salutary effect. If a few of the wealthy absentee landlords, who are the worst offenders, could be got within the jurisdiction of the city, and by arrest be compelled to employ proper overseers, it would be a proud day for New York. To remedy the overcrowding, with which the night inspections of the sanitary police cannot keep step, tenements may eventually have to be licensed, as now the lodging-houses, to hold so many tenants, and no more; or the State may have to bring down the rents that cause the crowding, by assuming the right to regulate them as it regulates the fares on the elevated roads. I throw out the suggestion, knowing quite well that it is open to attack. It emanated originally from one of the brightest minds that have had to struggle officially with this tenement-house question in the last ten years. In any event, to succeed, reform by law must aim at making it unprofitable to own a bad tenement. At best, it is apt to travel at a snail's pace, while the enemy it pursues is putting the best foot foremost.