“I have distinguished, among the dark rocks, that wonderful
carbuncle, which gleams ruddy as a furnace to them who view it from
beneath, but has ever become invisible to him whose daring foot has
scaled the precipice from which it darts its splendour.” —Sir W.
Scott: The Pirate, chap. xix.
Dr. Wallace thinks it is water trickling from a rock, and reddened
by the sun.
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