which I knew scarce anything;--he had carefully studied Hogarth's "Analysis of Beauty," Fresnoy's "Art of Painting," Gessner's "Letters," the "Lectures of Sir Joshua Reynolds," and several other works of a similar kind; and in all the questions of criticism that related to external form, the effects of light and shade, and the influences of the meteoric media, I found him a high authority. He had a fine eye for detecting the peculiar features which gave individuality and character to a landscape--those features, as he used to say, which the artist or poet should seize and render prominent, while, at the same time, lest they should be lost as in a mob, he softened down the others; and, recognising him as a master in this department of characteristic selection, I delighted to learn in his school--by far the best of its kind I ever attended. I was able, however, in part to repay him, by introducing him to many an interesting spot among the rocks, or to retired dells and hollows in the woods, which, from his sedentary habits, he would scarce ever have discovered for himself. I taught him too, to light fires after nightfall in the caves, that we might watch the effects of the strong lights and deep shadows in scenes so wild; and I still vividly remember the delight he experienced, when, after kindling up in the day-time a strong blaze at the mouth of the Doocot Cave, which filled the recess within with smoke, we forced our way inwards through the cloud, to mark the appearance of the sea and the opposite land seen through a medium so dense, and saw, on turning round, the landscape strangely enwrapped "in the dun hues of earthquake and eclipse." We have visited, after nightfall, the glades of the surrounding woods together, to listen to the night breeze, as it swept sullenly along the pine-tops; and, after striking a light in the old burial vault of a solitary churchyard, we have watched the ray falling on the fissured walls and ropy damp and mould; or, on setting on fire a few withered leaves, have seen the smoke curling slowly upwards, through a square opening in the roof, into the dark sky. William's mind was not of the scientific cast. He had, however, acquired some knowledge of the mathematics, and some skill both in architecture and in the anatomy of the human skeleton and muscles; while of perspective he perhaps knew well-nigh as much as was known at the time. I remember he preferred the Treatise on this art, of Ferguson the astronomer and mechanician, to any other; and used to say that the twenty years spent by the philosopher as a painter were fully redeemed, though they had produced no good pictures, by his little work on Perspective alone. My friend had ere this time given up the writing of verses very much, because he had learned to know what verses ought to be, and failed to satisfy himself with his own; and ere his death, I saw him resign in succession his flute and pencil, and yield up all the hopes he had once cherished of being known.