"The first thing painted on these vases was an outline of the figures, not only of their contour, but the markings of the features, muscles, folds of the drapery, ornaments, &c. This outline, in those vases which are of fine execution, was made with an instrument which carried a very fine and equal point, and at the same time left a very full body of the colour used on the vase. The colour itself appears to have been of a thick consistence; for if the strokes, even the finest, (which are as fine as could be made by a good pen,) are carefully examined with a magnifier in a side light, it will be distinctly perceived that there is a slight hollow in the middle of each, owing to the colour having flowed round the point which traced it, and met behind it,--just as we see in a road where the mud is of a semi-fluid consistence, that the track of a wheel is filled in with the pasty mire, leaving a depressed line in the centre of the rut. "It is impossible to say whether the instrument used for these outlines was of the nature of a pen or a brush; yet I am inclined to think from the flowing appearance of the lines, that a firm and finely pointed brush or pencil was used. Whichever it was, the hands which guided it possessed a steadiness and freedom of execution, almost incredible. Lines of a great length and difficult curvatures are carried over the convex surface of the vases, without the least wavering or indecision, or any lifting the point from the vase, or any repetition, or filling up of the stroke. An attentive examination of the outline will ascertain this fact beyond a doubt, and a further proof of it may be drawn from the few instances in which strokes of very great length have been done at twice, particularly in a vase of great size and admirable execution in the collection of Mr. Hope, representing probably the story of Triptolemus, where the long parallel lines marking the feathers of the wing of a Genius have been suspended about half way; and no particular care has been taken to conceal the junction of the lines. "This vase also furnishes a very rare and instructive instance of what, by artists, are called _pentimenti_, or changes of design. The wheel of a chariot and part of the arms of a figure, with a patera or cup in the hand, have been considerably varied; and the first outline is still visible like a faint red chalk stroke, but without any appearance of enlargement or smearing, so that it should seem that the false stroke was scraped off by a sharp edge, carefully applied to the surface of the vase when the varnish or paint was nearly dry.