Monster Kill

It towered above him like a clinging black cloud. It seemed to flow about him in almost liquid waves, to envelop and engulf him. His madly slashing saber sheared through it again and again, his ripping poniard tore and rent it; he was deluged with a slimy liquid that must have been its sluggish blood… They had rolled beyond the circle of light, and it was in utter blackness that the Cimmerian battled. Once he sank his teeth, beast-like, into the flabby substance of his foe, revolting as the stuff writhed and squirmed like living rubber from between his iron jaws… And with a panting cry that was half curse, half gasp of straining agony, he lunged toward it, thrusting with all his waning power. Hilt-deep the saber sank, somewhere below the grisly face, and a convulsive shudder heaved the vast bulk that half enveloped the Cimmerian. With a volcanic burst of contraction and expansion, it tumbled backward, rolling now with frantic haste down the corridor. Conan went with it, bruised, battered, invincible, hanging on like a bulldog to the hilt of his saber which he could not withdraw, tearing and ripping at the shuddering bulk with the poniard in his left hand, goring it to ribbons… He lay there watching the hurtling glow dwindling and dwindling until it vanished into a dark shining surface that seemed to surge upward to meet it. For an instant a dimming witchfire glimmered in those dusky depths; then it disappeared and Conan lay staring down into the blackness of the ultimate abyss from which no sound came.
-	The Slithering Shadow (chapter 3)