Note 1 — Chapter XIV

Later I was to find that Murian reckoning rested upon the extraordinary increased luminosity of the cliffs at the time of full moon on earth—this action, to my mind, being linked either with the effect of the light streaming globes upon the Moon Pool, whose source was in the shining cliffs, or else upon some mysterious affinity of their radiant element with the flood of moonlight on earth—the latter, most probably, because even when the moon must have been clouded above, it made no difference in the phenomenon. Thirteen of these shinings forth constituted a laya, one of them a lat. Ten was sa; ten times ten times ten a said, or thousand; ten times a thousand was a sais. A sais of laya was then literally ten thousand years. What we would call an hour was by them called a va. The whole time system was, of course, a mingling of time as it had been known to their remote, surface-dwelling ancestors, and the peculiar determining factors in the vast cavern.