In this matter of profit the law ought to have its strongest ally in the landlord himself, though the reverse is the case. This condition of things I believe to rest on a monstrous error. It cannot be that tenement property that is worth preserving at all can continue to yield larger returns, if allowed to run down, than if properly cared for and kept in good repair. The point must be reached, and soon, where the cost of repairs, necessary with a house full of the lowest, most ignorant tenants, must overbalance the saving of the first few years of neglect; for this class is everywhere the most destructive, as well as the poorest paying. I have the experience of owners, who have found this out to their cost, to back me up in the assertion, even if it were not the statement of a plain business fact that proves itself. I do not include tenement property that is deliberately allowed to fall into decay because at some future time the ground will be valuable for business or other purposes. There is unfortunately enough of that kind in New York, often leasehold property owned by wealthy estates or soul-less corporations that oppose all their great influence to the efforts of the law in behalf of their tenants. There is abundant evidence, on the other hand, that it can be made to pay to improve and make the most of the worst tenement property, even in the most wretched locality. The example set by Miss Ellen Collins in her Water Street houses will always stand as a decisive answer to all doubts on this point. It is quite ten years since she bought three old tenements at the corner of Water and Roosevelt Streets, then as now one of the lowest localities in the city. Since then she has leased three more adjoining her purchase, and so much of Water Street has at all events been purified. Her first effort was to let in the light in the hallways, and with the darkness disappeared, as if by magic, the heaps of refuse that used to be piled up beside the sinks. A few of the most refractory tenants disappeared with them, but a very considerable proportion stayed, conforming readily to the new rules, and are there yet. It should here be stated that Miss Collins's tenants are distinctly of the poorest. Her purpose was to experiment with this class, and her experiment has been more than satisfactory. Her plan was, as she puts it herself, fair play between tenant and landlord. To this end the rents were put as low as consistent with the idea of a business investment that must return a reasonable interest to be successful. The houses were thoroughly refitted with proper plumbing. A competent janitor was put in charge to see that the rules were observed by the tenants, when Miss Collins herself was not there. Of late years she has had to give very little time to personal superintendence, and the care-taker told me only the other day that very little was needed. The houses seemed to run themselves in the groove once laid down. Once