"frescoes," it seems certain that he never resorted to fresco in the ordinary acceptation of the term. Linnell, who must have been exceedingly familiar with his work, told Mr. Gilchrist: "He evidently founded his claim to the name fresco on the material he used, which was water-colour on a plaster ground (literally glue and whiting); but he always called it either fresco, gesso, or plaster." Linnell added that when he himself obtained from Italy the first copy that ever came to England of Cennino Cennini's Trattato della Pittura, a sixteenth-century treatise, edited in 1822 from the original MS., Blake, who was soon able to read it, "was gratified to find that he had been using the same materials and methods in painting as Cennini describes, particularly the carpenter's glue." "Unfortunately," says Linnell, "he laid this ground on too much like plaster to a wall," and when this was so applied to canvas or linen the picture was sure to crack, and many of Blake's best works have suffered great injury. Oil he disliked and vituperated. The reason probably was that, contrary to what might have been expected, his system of execution was by no means bold and dashing, but deliberate and even slow. He drew a rough dotted line with pencil, then with ink, then colour, filling in cautiously and carefully. All the grand efforts of design, he thought, depended on niceties not to be got at once. He seems, in fact, to have worked very much in the spirit of the mediæval illuminators, and the general aspect of a page of one of his Prophetical Books reminds us forcibly of one of their scrolls. Whether any direct influence from them upon him is traceable would be difficult to determine. Keats had evidently seen illuminated manuscripts, and been deeply impressed by them; but nearly forty years elapsed between the publication of the first of Blake's Prophetical Books and the composition of Keats's Eve of St. Mark. In one respect Blake certainly differed from the ancient miniaturists; he wrought mainly from reminiscence, and disliked painting with his eye on the object. His memory for natural forms must have been very powerful.
Blake is endowed in a very marked degree with the interest ascribed by Goethe to Problematische Naturen, men who must always remain more or less of a mystery to their fellows. In ancient times, and perhaps in some countries at the present day, he would have been accepted as a seer; in his own age and country the question was rather whether he
