This New Hampshire statute, making obligatory the supply of public information through books and periodicals in free libraries in every town, may fairly be termed the high-water mark of modern means for the diffusion of knowledge. This system of creating libraries proceeds upon the principle that intellectual enlightenment is as much a concern of the local government as sanitary regulations or public morality. Society has an interest that is common to all classes in the means that are provided for the education of the people. Among these means free town or city libraries are one of the most potent and useful. New Hampshire and Massachusetts, in nearly all of their towns and cities, have recognized the principle that public books are just as important to the general welfare as public lamps. What are everywhere needed are libraries open to the people as a matter of right, and not as a matter of favor. The largest library in the country, save one (that at Washington), owes its origin and success to this principle, combined with some private munificence. The Boston Public Library is unquestionably one of the most widely useful collections of books open to the public in this country. Of all the greater collections, it is the only one which lends out books free of charge to all citizens. Instituted in 1852, its career has been one of rapid progress and ever widening usefulness. I shall not dwell upon it at length, as the facts regarding it have been more widely published than those relating to any other library. Under the permissive library laws of thirty States, there had been formed up to 1896, when the last comprehensive statistics were gathered, about 1,200 free public libraries, supported by taxation, in the United States.