Exactly the same type of large library has grown up in America; and here, too, it is chiefly the universities whose stock of books is at the service of the scientific world. Besides these, there are special libraries belonging to learned societies, state law libraries, special libraries of government bureaus and of museums, and largest of all the Library of Congress. The collection of such scientific books began at the earliest colonial period, and at first under theological auspices. The Calvinist Church, more than any other, inclined to the study of books. As early as 1790 the catalog of Harvard College contained 350 pages, of which 150 were taken up by theological works. Harvard has to-day almost a million books, mostly in the department of literature, philology, history, philosophy, and jurisprudence. There are, moreover, in Boston the state library of law, with over a hundred thousand volumes; the Athenaeum, with more than two hundred thousand books; the large scientific library of the Institute of Technology, and many others. Similarly, in other large cities, the university libraries are the nucleus for scientific labors, and are surrounded by admirable special libraries, particularly in New York, Chicago, and Philadelphia. Then, too, the small academic towns, like Princeton, Ithaca, New Haven, and others, have valuable collections of books, which in special subjects are often unique. For many years the American university libraries have been the chief purchasers of the special collections left by deceased European professors. And it often happens, especially through the gift of grateful alumni, that collections of the greatest scientific value, which could not be duplicated, come into the possession even of lesser institutions.