The substitution of a hymn from the college grace for the "merry concert of both vocal and instrumental music, consisting of several merry ketches, and lasting almost two hours," which was the form the performance took in the middle of the eighteenth century, was made on one occasion when the weather was very inclement. Once made it was found easier and more suitable to continue it, and the observance came to be religious.[32] Magdalen Tower is one of those rarely beautiful buildings, which strike you with a silent awe of admiration when first you behold them, and ever afterwards reveal to your admiring gaze new aspects and unsuspected charms. It is changeable as a woman, but its changes are all good and there is nothing else about it that is feminine. It conveys the impression that it is at once massive and slender, and its very slenderness is male. The chaste simplicity of the lower stories carries the eye up unchecked to the ornamented belfry windows, the parapet and surmounting pinnacles, and thus enhances the impression of perfect and reposeful proportion. The growth of the colleges had influenced the halls. Statutes imposed by the authority of the University, began to take the place of the private rule of custom and tradition approved and enforced by the authority of the self-governing scholars. The students quickly ceased to be autonomous scholars and became disciplined schoolboys. The division between don and undergraduate began to be formed and was rapidly accentuated. Thus, at the close of the mediæval period, a change had been wrought in the character of the University, which rendered it an institution very different from that which it had been in the beginning. The growth of Nationalism, the separation of languages and the establishment of the collegiate system--these and similar causes tended to give the Universities a local and aristocratic character. The order introduced by the colleges was accompanied by the introduction of rank, and of academical power and influence stored in the older, permanent members of the University. Learning, too, had ceased to be thought unworthy of a gentleman; it became a matter of custom for young men of rank to have a University education. Thus, in the charter of Edward III., we even read that "to the University a multitude of nobles, gentry, strangers and others continually flock"; and towards the end of the century we find Henry of Monmouth, afterwards Henry V., as a young man, a sojourner at Queen's College. But it was in the next century that colleges were provided, not for the poor, but for the noble. Many colleges, too, which had been originally intended for the poor, opened their gates to the rich, not as fellows or foundation students, but as simple lodgers, such as monasteries might have received in a former age. This change has continued to be remarkably impressed upon Oxford and Cambridge even down to this day.