Again came that insidious musical piping--"_Tekeli-li! Tekeli-li!_"

Then, noting that we were actually gaining on our pursuer, it occurred
to us that the entity might be wounded. We could take no chances,
however, since it was very obviously approaching in answer to
Danforth's scream, rather than in flight from any other entity. The
timing was too close to admit of doubt. Of the whereabouts of that less conceivable and less mentionable
nightmare--that fetid, unglimpsed mountain of slime-spewing protoplasm
whose race had conquered the abyss and sent land pioneers to recarve
and squirm through the burrows of the hills--we could form no guess;
and it cost us a genuine pang to leave this probably crippled Old
One--perhaps a lone survivor--to the peril of recapture and a nameless
fate. Thank Heaven we did not slacken our run. The curling mist had thickened
again, and was driving ahead with increased speed; whilst the straying
penguins in our rear were squawking and screaming and displaying
signs of a panic really surprising in view of their relatively minor
confusion when we had passed them. Once more came that sinister, wide-ranged piping--"_Tekeli-li! Tekeli-li!_" We had been wrong. The thing was not wounded, but had
merely paused on encountering the bodies of its fallen kindred and the
hellish slime inscription above them. We could never know what that
demon message was--but those burials at Lake's camp had shown how much
importance the beings attached to their dead. Our recklessly used torch now revealed ahead of us the large open
cavern where various ways converged, and we were glad to be leaving
those morbid palimpsest sculptures--almost felt even when scarcely
seen--behind. Another thought which the advent of the cave inspired was the
possibility of losing our pursuer at this bewildering focus of large
galleries. There were several of the blind albino penguins in the open
space, and it seemed clear that their fear of the oncoming entity was
extreme to the point of unaccountability. If at that point we dimmed our torch to the very lowest limit of
traveling need, keeping it strictly in front of us, the frightened
squawking motions of the huge birds in the mist might muffle our
footfalls, screen our true course, and somehow set up a false lead. Amidst the churning, spiraling fog, the littered and unglistening floor
of the main tunnel beyond this point, as differing from the other
morbidly polished burrows, could hardly form a highly distinguishing
feature; even, so far as we could conjecture, for those indicated
special senses which made the Old Ones partly, though imperfectly,
independent of light in emergencies. In fact, we were somewhat apprehensive lest we go astray ourselves
in our haste. For we had, of course, decided to keep straight on
toward the dead city; since the consequences of loss in those unknown
foothill honeycombings would be unthinkable. The fact that we survived and emerged is sufficient proof that the
thing did take a wrong gallery whilst we providentially hit on
the right one. The penguins alone could not have saved us, but in
conjunction with the mist they seem to have done so. Only a benign fate
kept the curling vapors thick enough at the right moment, for they were
constantly shifting and threatening to vanish. Indeed, they did lift for a second just before we emerged from the
nauseously resculptured tunnel into the cave; so that we actually
caught one first and only half glimpse of the oncoming entity as we
cast a final, desperately fearful glance backward before dimming the
torch and mixing with the penguins in the hope of dodging pursuit. If
the fate which screened us was benign, that which gave us the half
glimpse was infinitely the opposite; for to that flash of semivision
can be traced a full half of the horror which has ever since haunted us. *       *       *       *       *

Our exact motive in looking back again was perhaps no more than the
immemorial instinct of the pursued to gauge the nature and course
of its pursuer; or perhaps it was an automatic attempt to answer a
subconscious question raised by one of our senses. In the midst of our flight, with all our faculties centered on the
problem of escape, we were in no condition to observe and analyze
details; yet even so our latent brain cells must have wondered at the
message brought them by our nostrils. Afterward, we realized what it
was--that our retreat from the fetid slime coating on those headless
obstructions, and the coincident approach of the pursuing entity, had
not brought us the exchange of stenches which logic called for. In the neighborhood of the prostrate things that new and lately
unexplainable fetor had been wholly dominant; but by this time it ought
to have largely given place to the nameless stench associated with
those others. This it had not done--for instead, the newer and less
bearable smell was now virtually undiluted, and growing more and more
poisonously insistent each second. So we glanced back--simultaneously, it would appear; though no doubt
the incipient motion of one prompted the imitation of the other. As
we did so we flashed both torches full strength at the momentarily
thinned mist; either from sheer primitive anxiety to see all we could,
or in a less primitive but equally unconscious effort to dazzle the
entity before we dimmed our light and dodged among the penguins of the
labyrinth center ahead. Unhappy act! Not Orpheus himself, or Lot's wife, paid much more dearly
for a backward glance. And again came that shocking, wide-ranged
piping--"_Tekeli-li! Tekeli-li!_"

Danforth was totally unstrung, and the first thing I remember of the
rest of the journey was hearing him light-headedly chant a hysterical
formula in which I alone of mankind could have found anything but
insane irrelevance. It reverberated in falsetto echoes among the
squawks of the penguins; reverberated through the vaulting ahead,
and--thank Heaven--through the now empty vaultings behind. He could not
have begun it at once--else we would not have been alive and blindly
racing. I shudder to think of what a shade of difference in his nervous
reactions might have brought. "South Station Under--Washington Under--Park Street
Under--Kendall--Central--Harvard----" The poor fellow was chanting the
familiar stations of the Boston-Cambridge tunnel that burrowed through
our peaceful native soil thousands of miles away in New England, yet to
me the ritual had neither irrelevance nor home feeling. It had only
horror, because I knew unerringly the monstrous, nefandous analogy that
had suggested it. We had expected, upon looking back, to see a terrible and incredible
moving entity if the mists were thin enough; but of that entity we had
formed a clear idea. What we did see--for the mists were indeed all too
malignly thinned--was something altogether different, and immeasurably
more hideous and detestable.