In the Essay on 'New Sources of English History' the learned author has given us a startling account of the deplorable condition into which some of the most precious of our national manuscripts had been allowed to fall--of the utterly chaotic state of our depositories--of the hopelessness, the despair which must needs have come upon one student after another who might be fortunate enough to be turned loose into the various prison-houses of our muniments--and of the efforts made, and happily at last made with splendid success, to cleanse the Augean stable, and to let the world know something of the wealth it contained. With characteristic modesty Mr. Brewer said nothing of his own part in all that laborious and sagacious organization which resulted in our obtaining the magnificent _Calendars_, which have opened out to us all 'that new world which is the old' that had become almost forgotten or unknown. He was not the man to assert himself, he knew that posterity would give him his due, but with a simple desire to stimulate research, and to show how much remained to be done, and how much to be discovered and made known, he drew the attention of his readers chiefly and primarily to the value of the Calendars, and to the important results which those Calendars had already produced, and were destined to produce hereafter. He had quite enough to say upon this point, and if his life had been spared, it is probable that he would eventually have given us a more comprehensive account of the series of volumes which, though now issuing from the press _pari passu_ with the Calendars, were originally undertaken a little later. Such an Essay by such a master would indeed have been an important aid to the student, but at the time of Mr. Brewer's lamented death the day had hardly come for such a _résumé_; and even now, though so much has been achieved, so much and so well, the hour has hardly arrived nor the man for taking a comprehensive survey, and giving to the public an intelligent and intelligible account of that other Library of Chronicles, and biographies, and letters, and cartularies, and those other memorials of the Middle Ages in England, which it is to be feared are hardly as well known as they ought to be, nor as widely studied as they deserve.