That night they camped outside the city. Once, at midnight, they were awakened by a shrill scream from beyond the great wall. It was very high at first, descending gradually until it ended in a series of dismal moans. It had a strange effect upon the blacks, almost paralyzing them with terror while it lasted, and it was an hour before the camp settled down to sleep once more. In the morning the effects of it were still visible in the fearful, sidelong glances that the Waziri continually cast at the massive and forbidding structure which loomed above them.
Again the apes conferred. At length Karnath spoke again.