V. FIRST DUKE OF NORTHUMBERLAND, from 1750 to 1786: general reparation, after a long period of neglect and ruin, including a material transformation of the greater part of the castle. The Keep was almost entirely demolished, and rebuilt after the manner that was called (and, in one sense of that term, really was) “Gothic” in the eighteenth century in England; and the towers and curtain of the circumvallation suffered in like manner. VI. FOURTH DUKE OF NORTHUMBERLAND, from 1854 to 1865: complete restoration of the entire castle. The important works erected by Duke Algernon along the lines of the circumvallation, and to the south and the south-west of these lines, have already been described; in addition to these, the duke rebuilt the range of apartments extending from the Keep southwards to the Edwardian Gateway from the first to the second baly; and he built the noble Prudhoe Tower, with the chapel adjoining it, the Ante-Room, the Guard Chamber, the present Dining-Hall, and the completion of the Keep. The governing idea of this restoration was _really to restore_, in all their leading and most characteristic features, the mediæval arrangements and aspect of Alnwick Castle so far as its exterior was concerned; while, at the same time, the whole of the interior of the restored edifice was to be planned, fitted, and adorned, in the most sumptuous style, after the manner of a cinquecento Roman palace, and with all the luxurious splendour and the various skilful contrivances required and suggested by the taste and the usages of the present day. The only important deviation from the former part of the duke’s plan, was the removal of the Edwardian Towers, and the adjoining curtain-wall between the Abbot’s Tower and the Postern Tower, in order to open the view from the windows of the new Prudhoe Tower towards the north: but the Italian portion of the scheme was accomplished in its integrity. The whole of the architectural restoration and rebuilding was carried out with the most perfect success, under the direction of Mr. Salvin, an architect eminently distinguished for his practical knowledge of the Early Gothic of England in its military aspect, as also for both the conscientious fidelity of his restorations and the judicious consistency of his original designs. We can easily understand with what satisfaction Mr. Salvin must have removed the Strawberry Hill pseudo-Gothic of the first duke, as well as the far higher gratification which must have attended the progressive realisation of his own truly admirable compositions. [Illustration: _Alnwick Abbey._]