She urged the horse on with all her power, but perceptibly he was slowing up. She flashed another backward look. The Arab was close behind her--closer than she had been aware. She had a momentary glimpse of a big white figure, dark piercing eyes, and white gleaming teeth, and passionate rage filled her. With no thought of what the consequences or retaliation might be, with no thought at all beyond a wild desire to rid herself of her pursuer, driven by a sudden madness which seemed to rise up in her and which she could not control, she clutched her revolver and fired twice, full in the face of the man who was following her. He did not even flinch and a low laugh of amusement came from him. And at the sound of his laugh Diana's mouth parched suddenly, and a cold shiver rippled across her spine. A strange feeling that she had never experienced before went through her. She had missed again as she had missed this morning. How, she did not know; it was inexplicable, but it was a fact, and a fact that left her with a feeling of powerlessness. She dropped the useless revolver, trying vainly to force her horse's pace, but inch by inch the fiery chestnut that the Arab was riding crept up nearer alongside. She would not turn to look again, but glancing sideways she could see its small, wicked-looking head, with flat laid ears and vicious, bloodshot eyes, level with her elbow. For a moment or two it remained there, then with a sudden spurt the chestnut forged ahead, and as it shot past it swerved close in beside her, and the man, rising in his stirrups and leaning towards her, flung a pair of powerful arms around her, and, with a jerk, swung her clear of the saddle and on to his own horse in front of him. His movement had been so quick she was unprepared and unable to resist. For a moment she was stunned, then her senses came back to her and she struggled wildly, but, stifled in the thick folds of the Arab's robes, against which her face was crushed, and held in a grip that seemed to be slowly suffocating her, her struggles were futile. The hard, muscular arm round her hurt her acutely, her ribs seemed to be almost breaking under its weight and strength, it was nearly impossible to breathe with the close contact of his body. She was unusually strong for a girl, but against this steely strength that held her she was helpless. And for a time the sense of her helplessness and the pain that any resistance to the arm wrapped round her gave her made her lie quiet. She felt the Arab check his horse, felt the chestnut wheel, spinning high on his hind legs, and then bound forward again.