To judge from the number of sketch-books filled on this journey Turner must have had the pencil in his hands practically the whole time he was away. Before starting he had ‘got up’ the subject carefully from books and engravings, and he knew exactly what buildings, antiquities and views he ought to look for at each place he went to. In this way he lost no time mooning about, like a modern artist, looking for unexpected beauties. He just went straight from one guide-book point of interest to another, sketched each methodically from every possible point of view and hurried on to the next. The sketch-books he used were generally about 7½ by 4½ inches in size, composed of ordinary white paper. His favourite medium was a hard-pointed pencil. His sketches are always made with a view to information, never for effect. In this way about a dozen books were filled, each of about a hundred pages, and most are drawn on on both sides of the pages. Our reproductions of the sketches of the Grand Canal, the Piazzetta at Venice, and Trajan’s Column (Plates XLVIII., L., and LIII.) may stand as examples of the main body of work done by Turner during this visit. In addition to these small sketch-books he also used some of larger size, with the paper prepared with a wash of grey. He used one of these books at Tivoli, and another at Rome and Naples. The grey tint was of such a nature that it lifted quite easily when rubbed with bread or india-rubber. In this way he was able to indicate the chiaroscuro of his sketches with ease and celerity. The more elaborate drawings of Rome were made in this way, among them those exquisite views from Monte Mario, which have long been among the most admired of the drawings exhibited in the Turner Water-Colour Rooms at the National Gallery. Where the subject was an interesting one he occasionally worked over it, or over parts of it, with water-colour, as in the ‘View of Rome from Monte Mario’ (No. 592) here reproduced (Plate LI.), and ‘The Colosseum’ (No. 596) among the exhibited drawings. But the number of drawings in which Turner had recourse to colour is extremely limited, quite nineteen-twentieths of them being simply in pencil. The drawings made during this visit are, in Mr. Ruskin’s opinion, the best Turner ever made from nature. ‘All the artist’s powers,’ he wrote, ‘were at this period in perfection; none of his faults had developed themselves; and his energies were taxed to the utmost to seize, both in immediate admiration, and for future service, the loveliest features of some of the most historically interesting scenery in the world.’[22] And again, ‘They are, in all respects, the most true and the most beautiful ever made by the painter.’[23] And assuredly it would be difficult to praise these superb drawings too highly or too enthusiastically; for sheer grace of pencilling, for skilful composition, for loving, unwearied rendering of architecture and natural scenery they are absolutely unrivalled.