La's education was progressing nicely by the time the party approached the border of the Galla country, but in the meantime both girls had become aware of a new menace threatening La of Opar. Ibn Dammuk marched often beside her, and in his eyes, when he looked at her, was a message that needed no words to convey. But when Abu Batn was near, Ibn Dammuk ignored the fair prisoner, and this caused Zora the most apprehension, for it convinced her that the wily Ibn was but biding his time until he might find conditions favorable to the carrying out of some scheme that he already had decided upon, nor did Zora harbor any doubts as to the general purpose of his plan.
At the edge of the Galla country they were halted by a river in flood. They could not go north into Abyssinia proper, and they dared not go south, where they might naturally have expected pursuit to follow. So perforce they were compelled to wait where they were.
And while they waited Ibn Dammuk struck.
IX
IN THE DEATH CELL OF OPAR
Once again Peter Zveri stood before the walls of Opar, and once again the courage of his black soldiers was dissipated by the weird cries of the inmates of the city of mystery. The ten warriors, who had not been to Opar before and who had volunteered to enter the city, halted trembling as the first of the blood-curdling screams rose, shrill and piercing, from the forbidding ruins.
Miguel Romero once more led the invaders, and directly behind him was Wayne Colt. According to the plan the blacks were to have followed closely behind these two, with the rest of the whites bringing up the rear, where they might rally and encourage the negroes, or if necessary, force them on at the points of their pistols. But the blacks would not even enter the opening of the outer wall, so demoralized were they by the uncanny warning screams which their superstitious minds attributed to malignant demons, against which there could be no defense and whose animosity meant almost certain death for those who disregarded their wishes.
"In with you, you dirty cowards!" cried Zveri, menacing the blacks with his revolver in an effort to force them into the opening.
One of the warriors raised his rifle threateningly. "Put away your weapon, white man," he said. "We will fight men, but we will not fight the spirits of the dead."
"Lay off, Peter," said Dorsky. "You will have the whole bunch on us in a minute and we shall all be killed. Every nigger in the outfit is in sympathy with these men."