The evolution of the book is therefore the history of the unfoldment of human rights. The chained tome in its medieval prison cell has been supplanted by the handy volume freely sent from the hospitable public library to the homes of the common people. The humblest citizen, today, has at his command books in number and in kind which royal treasuries could not have purchased five hundred years ago. In the sixteenth century, it took a flock of sheep to furnish the vellum for one edition of a book, and the product was for the very few; in the twentieth, a forest is felled to supply the paper for an edition, and the output goes to many hundred thousand readers. As books have multiplied, learning has been more widely disseminated. As more people have become educated, the demand for books has increased enormously. The multiplication of books has stimulated the writing of them, and the inevitable result has been a deterioration of quality proportioned to the increase in quantity. In the English language alone, since 1880, 206,905 titles of books printed in the United States, have been listed, and 226,365 in Great Britain since 1882. Of these 433,270 titles, 84,722 represent novels--36,607 issued in the United States and 48,115 in Great Britain. Despite the inclusion of the trivial and the unsound in this vast mass of printed stuff, no one can doubt the magnitude of the service performed in the advancement of human kind. The universities have felt the touch of popular demand, and in this country at least some of them have attempted to respond. Through correspondence courses, short courses, university week conferences, summer schools, local forums, traveling instructors, and other media of extension, many institutions of higher learning have given recognition to the appeal of the masses. Logically with this enlargement of educational opportunity, the amplification of library facilities has kept pace. The libraries have become in a real sense the laboratory of learning. Intended primarily as great storehouses for the accumulation and preservation rather than the use of manuscripts and books, their doors have been opened wide to all farers in search of truth or mental stimulus. In a report to the English King, Sir William Berkeley wrote as governor of Virginia in 1642: "I thank God there are no free schools nor printing, and I hope we shall not have them these hundred years; for learning has brought disobedience into the world, and printing has divulged them, and libels against the best government. God keep us from both."