But admitting that we cannot entirely prevent the enormous massing of people, such as prevails in our Eleventh and Seventeenth Wards, we can certainly control it by legislation. The recent Sanitary Acts of New York attempt to hold in check the mode of building tenement-houses, requiring certain means of ventilation and exit, forbidding the filling-up of the entire space between the houses with dwellings, and otherwise seeking to improve the condition of such tenement-houses. There only needs two steps farther in imitation of the British Lodging-house Acts--one removing altogether the cellar-population, when under certain unhealthy conditions; and the other limiting by law the number who can occupy a given space in a tenement-room. The British Acts assign 240 cubic feet as the lowest space admissible for each tenant or lodger, and if the inspector finds less space than that occupied, he at once enters a complaint, and the owner or landlord is obliged to reduce the number of his occupants, under strict penalties. A provision of this nature in our New York law would break up our worst dens, and scatter their tenants or lodgers. The removal of the cellar-population from a large proportion of their dwellings should also be made. Liverpool removed 20,000 cellar-occupants in one year (1847), to the immense gain, both moral and sanitary, of the city. New York needs the reform quite as much. There would be no real hardship in such a measure, as the tenants could find accommodations in other parts of the city or the suburbs; and some would perhaps emigrate to the country. One often-proposed remedy for the ills of our tenement-house system--the "Model Lodging-house"--has never been fairly tried here. The theory of this agency of reform is, that if a tenement-house can be constructed on the best sanitary principles, with good ventilation, with limited number of tenants, no overcrowding, and certain important conveniences to the lodgers, all under moral supervision (so that tenants of notoriously bad character are excluded), and such a house can be shown to pay, say seven per cent. net, this will become a "model" to the builders of tenement-houses; some building after the same style, because public opinion and their own conscience require it, others because competition compels it. Thus, in time, the mode of structure and occupancy of all the new tenement-houses would be changed. But to attain this desirable end, the model houses must first pay a profit, and a fair one. So long as they do not succeed in this, they are a failure, however benevolent their object and comfortable their arrangements. In this point of view, the "Waterloo Houses," in London, are a success, and do undoubtedly influence the mode of building and management of private tenement-houses; in this, also, the "Peabody Houses" are not a success, and will have no permanent influence.