These same purposes are promoted by the favorite exercise of moot-courts, held twice a week by the different professors in succession. A case involving some unsettled question of law is presented by four students, designated so long in advance as to allow time for careful preparation; and at the close of the arguments an opinion is pronounced by the presiding professor, commenting upon the arguments on each side, and deciding between them. These occasions are found to enlist the best attention, not only of those immediately engaged, but of the whole School,--while some of the efforts they call forth show distinguished research and ability. On this mimic field are trained forensic powers destined to be the pride and ornament of the bar. The advantages for study afforded by the extensive library of the Law School should not be forgotten. This is separate from the Public Library of the University, and contains about fourteen thousand volumes. Here are all the American Reports,--the Statutes of the United States, as well as those of all the several States,--a regular series of all the English Reports, including the Year-Books,--the English Statutes,--the principal treatises on American and English law,--also a large body of works in the Scotch, French, German, Dutch, Spanish, Italian, and other foreign law,--and an ample collection of the best editions of the Roman or Civil Law, with the works of the most celebrated commentators upon that ancient text. This library is one of the largest and most valuable, relating to law, in the country. As an aid to study, it cannot be estimated too highly. Here the student may range at will through all the demesnes of jurisprudence. Here he may acquire knowledge of law-books, learning their true character and value, which will be of incalculable service in his future labors. Whoso knows how to use a library possesses the very keys of knowledge. Next to knowing the law is knowing where to find it. There is another advantage, of peculiar character, in the opportunity of kindly and profitable social relations among the students, and also between students and professors. Young men engaged in similar pursuits are instructors to each other. The daily conversation concerns their common studies, and contributes some new impulse. Mind meets mind, and each derives strength from the contact. The professor is also at hand. In the lecture-room, and also in private, he is ready for counsel and help. The students are not alone. At every step they find an assistant ready to conduct them through the devious and toilsome passes, and to remove the difficulties which throng the way. This twofold companionship of students with each other and with their appointed teachers is full of good influence, not only in the cordial intercourse it begets, but in the positive knowledge it diffuses, and its stimulating effect upon the mind.