sleep, light or dark, day or night, since it came here, excepting when it withdraws for some weeks at a time, unaccountably.
"In total dark it is visible as in daylight. I do not mean merely its eyes. It is all visible distinctly in a halo that resembles a glow of red embers, and which accompanies it in all its movements.
"When it leaves me for a time, it is always at night, in the dark, and in the same way. It grows at first uneasy, and then furious, and then advances towards me, grinning and shaking its paws clenched, and, at the same time, there comes the appearance of fire in the grate. I never have any fire. I can't sleep in the room where there is any, and it draws nearer and nearer to the chimney, quivering, it seems, with rage, and when its fury rises to the highest pitch, it springs into the grate, and up the chimney, and I see it no more.
