Nothing now was left but the Shadow, and on that my eyes were intently fixed, till again eyes grew out of the Shadow,—­malignant, serpent eyes.  And the bubbles of light again rose and fell, and in their disordered, irregular, turbulent maze, mingled with the wan moonlight.  And now from these globules themselves, as from the shell of an egg, monstrous things burst out; the air grew filled with them:  larvae so bloodless and so hideous that I can in no way describe them except to remind the reader of the swarming life which the solar microscope brings before his eyes in a drop of water,—­things transparent, supple, agile, chasing each other, devouring each other; forms like naught ever beheld by the naked eye.  As the shapes were without symmetry, so their movements were without order.  In their very vagrancies there was no sport; they came round me and round, thicker and faster and swifter, swarming over my head, crawling over my right arm, which was outstretched in involuntary command against all evil beings.  Sometimes I felt myself touched, but not by them; invisible hands touched me.  Once I felt the clutch as of cold, soft fingers at my throat.  I was still equally conscious that if I gave way to fear I should be in bodily peril; and I concentered all my faculties in the single focus of resisting stubborn will.  And I turned my sight from the Shadow; above all, from those strange serpent eyes,—­eyes that had now become distinctly visible.  For there, though in naught else around me, I was aware that there was a will, and will of intense, creative, working evil, which might crush down my own.

The pale atmosphere in the room began now to redden as if in the air of some near conflagration.  The larvae grew lurid as things that live in fire.  Again the room vibrated; again were heard the three measured knocks; and again all things were swallowed up in the darkness of the dark Shadow, as if out of that darkness all had come, into that darkness all returned.

As the gloom receded, the Shadow was wholly gone.  Slowly, as it had been withdrawn, the flame grew again into the candles on the table, again into the fuel in the grate.  The whole room came once more calmly, healthfully into sight.

The two doors were still closed, the door communicating with the servant’s room still locked.  In the corner of the wall, into which he had so convulsively niched himself, lay the dog.  I called to him,—­no movement; I approached,—­the animal was dead:  his eyes protruded; his tongue out of his mouth; the froth gathered round his jaws.  I took him in my arms; I brought him to the fire.  I felt acute grief for the loss of my poor favorite,—­acute self-reproach; I accused myself of his death; I imagined he had died of fright.  But what was my surprise on finding that his neck was actually broken.  Had this been done in the dark?  Must it not have been by a hand human as mine; must there not have been a human agency all the while in that room?  Good cause to suspect it.  I cannot tell.  I cannot do more than state the fact fairly; the reader may draw his own inference.