The lineaments were not those of any one of my acquaintance, and recalled no countenance I had ever seen. If the appearance suggested a young member of the family, it was not because of resemblance, but from his being frequently in my mind, and apt to be associated with any alarm due to the tinge of superstition from which none of us are wholly free. For the reason already given it could not have been a reminiscence of a picture. The shading and coloring were too exact for anything painted. My easel was, it is true, near by, on the opposite side of me, and on it were two heads of nearly the size of that I describe; but they were hard-featured old saints of a deep mahogany hue, relieved by a very dark background, and therefore the exact antipodes of my shadowy visitant. On these I had been painting an hour or two before; and that is the solitary connection conceivable between the spectre and anything tangible. The reader will perhaps be inclined to set it down as having been complementary to them. I do not think it was; but were it so, the point mainly craving explanation remains untouched--that what I saw was with the waking eye. It may have come from the land of dreams, or from a remote outlying province of it, but its perceptible existence was entirely in the realm of actualities. I was not conscious, and had no recollection, of having had a dream. It is true that, according to a theory necessarily and in its nature incapable of being sustained by positive proof, we may have unconscious dreams, and be always dreaming when asleep without knowing it. Persons who rise at night, take pen and paper and solve problems which had been the worry of their waking hours, and return to their couch still asleep, present cases analogous to mine in so far as their unconscious mental activity leaves an outcome and expression obvious to the senses. Another parallel would be that of a sleep-walking artist who should when in a state of somnambulism execute a picture. But neither case would be identical in principle with mine. The artist and the mathematician would both have executed in their sleep what they had laid the foundation of when awake. I, on the other hand, would, should I transfer my aerial sitter to canvas, simply paint what I saw when wide awake, just as in undertaking to reproduce any other face from memory, whether observed once for twenty seconds or frequently and for longer periods.