At last, by the use of a chance formula, in idle experiment, he summoned up the dim, tenuous ghost of a sorcerer from prehistoric years; and the ghost, in a thin whisper of uncouth, forgotten speech, informed us that the letters on the tablet were those of a lan- guage of the serpent-men, whose primordial continent had sunk aeons before the lifting of Hyperborea from the ooze. But the ghost could tell us naught of their significance; for, even in his time, the serpent-people had become a dubious legend; and their deep, ante- human lore and sorcery were things irretrievable by man.
Now, in all the books of conjuration owned by Avyctes, there was no spell whereby we could call the lost serpent-men from their fabulous epoch. But there was an old Lemurian formula, recondite and uncertain, by which the shadow of a dead man could be sent into years posterior to those of his own life-time, and could be recalled after an interim by the wizard. And the shade, being wholly insubstantial, would suffer no harm from the temporal transition, and would remem- ber, for the information of the wizard, that which he had been instructed to learn during the journey.
So, having catled again the ghost of the prehistoric sorcerer, wnose name was Ybith, Avyctes made a singular use of several very ardent gums and com- bustible fragments of fossil wood; and he and I, reciting the responses to the formula, sent the thin spirit of Ybith into the far ages of the serpent-men. And after a time which the master deemed sufficient, we performed the curious rites of incantation that would recall Ybith from his alienage. And the rites were successful; and Ybith stood before us again, like a blown vapor that is nigh to vanishing. And in words that were faint as the last echo of perishing memories, the specter told us the key to the meaning of the letters, which he had learned in the primeval past; and after this, we questioned Ybith no more, but suffered him to return unto slumber and oblivion.
Then, knowing the import of the tiny, twisted ciph- ers, we read the writing on the tablet and made thereof a transliteration, though not without labor and difficulty, since the very phonetics of the serpent tongue, and the symbols and ideas expressed in the writing, were somewhat alien to those of mankind. And when we had mastered the inscription, we found that it con- tained the formula for a certain evocation which, no doubt, had been used by the serpent sorcerers. But the object of the evocation was not named; nor was there any clue to the nature or identity of that which would come in answer to the rites. And moreover there was no corresponding rite of exorcism nor spell of dismissal.
Great was the jubilation of Avyctes, deeming that we had learned a lore beyond the memory or pre- vision of man. And though I sought to dissuade him, he resolved to employ the evocation, arguing that our discovery was no chance thing but was fatefully pre- destined from the beginning. And he seemed to think lightly of the menace that might be brought upon us by the conjuration of things whose nativity and at- tributes were wholly obscure. “For,” said Avyctes, “I have called up, in all the years of my sorcery, no god or devil, no demon or lich or shadow, which I could not control and dismiss at will. And I am loath to believe that any power or spirit beyond the subversion of my spells could have been summoned by a race of serpents, whatever their skill in demonism and necro- mancy.”
So, seeing that he was obstinate, and aeknowledging him for my master in all ways, I consented to aid Avyctes in the experiment, though not without dire misgivings. And then we gathered together, in the chamber of conjuration, at the specified hour and configura- tion of the stars, the equivalents of sundry rare materials that the tablet had instructed us to use in the ritual.
Of much that we did, and of certain agents that we employed, it were better not to tell; nor shall I record the shrill, sibilant words, difficult for beings not born of serpents to articulate, whose intonation formed a signal part of the ceremony. Toward the last, we drew a triangle on the marble floor with the fresh blood of birds; and Avyctes stood at one angle, and I at another; and the gaunt umber mummy of an Atlantean warrior, whose name had been Oigos, was stationed at the third angle. And standing thus, Avyctes and I held tapers of corpse-tallow in our hands, till the tapers had burned down between our fingers as into a socket. And in the outstretched palms of the mummy of Oigos, as if in shallow thuribles, talc and asbestos burned, ignited by a strange fire whereof we knew the secret. At one side we had traced on the floor an in- frangible ellipse, made by an endless linked repetition of the twelve unspeakable Signs of Oumor, to which we could retire if the visitant should prove inimical or rebellious. We waited while the pole-circling stars went over, as had been prescribed. Then, when the tapers had gone out between our seared fingers, and the talc and asbestos were wholly consumed in the mummy’s eaten palms, Avyctes uttered a single word whose sense was obscure to us; and Oigos, being animated by sorcery and subject to our will, repeated the word after a given interval, in tones that were hollow as a tomb-born echo; and I in my turn also repeated it.
Now, in the chamber of evocation, before beginning the ritual, we had opened a small window giving upon the sea, and had likewise left open a high door on the hall to landward, lest that which came in answer to us should require a spatial mode of entrance. And during the ceremony, the sea became still and there was no wind, and it seemed that all things were hushed in awful expectation of the nameless visitor. But after all was done, and the last word had been repeated by Oigos and me, we stood and waited vainly for a visible sign or other manifestation. The lamps burned stilly in the midnight room; and no shadows fell, other than were cast by ourselves and Oigos and by the great marble women along the walls. And in the magic mirrors we had placed cunningly, to reflect those that were otherwise unseen, we beheld no breath or trace of any image.
At this, after a reasonable interim, Avyctes was sorely disappointed, deeming that the evocation had failed of its purpose; and I, having the same thought, was secretly relieved. And we questioned the mummy of Oigos, to learn if he had perceived in the room, with such senses as are peculiar to the dead, the sure token or doubtful proof of a presence undescried by us the living. And the mummy gave a necromantic answer, saying that there was nothing.
“Verily,” said Avyctes, “it were useless to wait longer. For surely in some way we have misunderstood the purport of the writing, or have failed to duplicate the matters used in the evocation, or the correct in- tonement of the words. Or it may be that in the lapse of so many aeons, the thing that was formerly wont to respond has long ceased to exist, or has altered in its attributes so that the spell is now void and valueless.” To this I assented readily, hoping that the matter was at an end. So, after erasing the blood-marked triangle and the sacred ellipse of the linked Signs of Oumor, and after dismissing Oigos to his wonted place among other mummies, we retired to sleep. And in the days that followed, we resumed our habitual studies, but made no mention to each other of the strange triangular tablet or the vain formula.
Even as before, our days went on; and the sea climbed and roared in white fury on the cliffs, and the winds wailed by in their unseen, sullen wrath, bowing the dark cedars as witches are bowed by the breath of Taaran, god of evil. Almost, in the marvel of new tests and cantraips, I forgot the ineffectual conjuration, and I deemed that Avyctes had also forgotten it.
All things were as of yore, to our sorcerous perception; and there was naught to trouble us in our wisdom and power and serenity, which we deemed secure above the sovereignty of kings. Reading the horoscopic stars, we found no future ill in their as- pect; nor was any shadow of bale foreshown to us through geomancy, or other modes of divination such as we employed. And our familiars, though grisly and dreadful to mortal gaze, were wholly obedient to us the masters.
Then, on a clear summer afternoon, we walked, as was often our custom, on the marble terrace behind the house. In robes of ocean-purple, we paced among the windy trees with their blown, crooked shadows; and there, following us as we went to and fro, I saw the blue shadow of Avyctes and my own shadow on the marble; and between them, an adumbration that was not wrought by any of the cedars. And I was greatly startled, but spoke not of the matter to Avyctes, and observed the unknown shadow with covert care.