Shrieking, slithering, torrential shadows of red viscous madness chasing one another through endless, ensanguined corridors of purple fulgurous sky ... formless phantasms and kaleidoscopic mutations of a ghoulish, remembered scene; forests of monstrous overnourished oaks with serpent roots twisting and sucking unnamable juices from an earth verminous with millions of cannibal devils; moundlike tentacles groping from underground nuclei of polypous perversion ... insane lightning over malignant ivied walls and demon arcades choked with fungous vegetation.... Heaven be thanked for the instinct which led me unconscious to places where men dwell; to the peaceful village that slept under the calm stars of clearing skies. [Illustration: "They were slithering shadows of red madness."] I had recovered enough in a week to send to Albany for a gang of men to blow up the Martense mansion and the entire top of Tempest Mountain with dynamite, stop up all the discoverable mound-burrows, and destroy certain overnourished trees whose very existence seemed an insult to sanity. I could sleep a little after they had done this, but true rest will never come as long as I remember that nameless secret of the lurking fear. The thing will haunt me, for who can say the extermination is complete, and that analogous phenomena do not exist all over the world? Who can, with my knowledge, think of the earth's unknown caverns without a nightmare dread of future possibilities? I can not see a well or a subway entrance without shuddering ... why can not the doctors give me something to make me sleep, or truly calm my brain when it thunders? What I saw in the glow of my flashlight after I shot the unspeakable straggling object was so simple that almost a minute elapsed before I understood and went delirious. The object was nauseous; a filthy whitish gorilla thing with sharp yellow fangs and matted fur. It was the ultimate product of mammalian degeneration; the frightful outcome of isolated spawning, multiplication, and cannibal nutrition above and below the ground; the embodiment of all the snarling chaos and grinning fear that lurk behind life. It had looked at me as it died, and its eyes had the same odd quality that marked those other eyes which had stared at me underground and excited cloudy recollections. One eye was blue, the other brown. They were the dissimilar Martense eyes of the old legends, and I knew in one inundating cataclysm of voiceless horror what had become of that vanished family; the terrible and thunder-crazed house of Martense.