They had now been walking for many hours, and Russell, who was quite unused to any exercise of this sort, was greatly fatigued. Nothing, indeed, but the dread of capture and the thought of a merciless pursuer on his track had kept him up so long. He felt that he had reached the utmost limit of his strength. At last they caught sight of a windmill in a field on the right. The sight enlivened him. Here, he thought, they might hide and obtain rest. He said this to Rita. She acquiesced. To gain the windmill was now their chief desire. Nearer they came, and nearer. But now, just when all seemed gained, they saw a number of armed men coming toward them, and in a few minutes they were arrested by the followers of Lopez. CHAPTER XXXVI. HOW DANGERS THICKEN AROUND THE DESPAIRING RUSSELL. The moon was still shining very brightly, and they could see very well the faces and the uniforms of their captors. The sight of the government uniforms was very reassuring to Rita, who was only anxious to escape from the Carlists; but the first glance which Russell gave at the captain of the band overwhelmed him with terror. He recognized Lopez, and saw that he had fallen into the hands of one who had no reason, and perhaps no inclination, to show him the slightest mercy. At that sight all Russell's courage subsided, and he fell into a state of mental prostration as extreme as that which he had experienced when "His Majesty" had confronted him in his flight. For, unfortunately for him, Lopez had received at his hands treatment which was sufficient to inspire a deep resentment even in a man less impetuous than this hot-blooded Spaniard. First, he had not only discouraged his attentions to Katie, but had prohibited them in every possible way, and in the most positive and insulting manner. Again, but a short time before this, at the railway station at Madrid, he had caused him to be ejected from the railway-carriage. For all this he felt that Lopez must cherish a deep desire for vengeance, and would rejoice now if he were to discover that his enemy had become his prisoner. In such an emergency as this, Russell was utterly helpless, and could only hope that his disguise might baffle Lopez, or that the quick wit of Rita might be able to save him from discovery. After regarding them for a sufficient time, Lopez began an examination of the prisoners. "Who are you?" he asked. Rita answered. "I am a poor woman," said she, "and this lady is a foreigner who does not understand Spanish." "What are you doing here alone on this road?" "We are fugitives." "Fugitives from whom?" "From the Carlists." At this Lopez was visibly excited. "The Carlists?" he asked. "Where are they? Where did you leave them? Tell the truth, woman, and you shall be rewarded. But if you are false, I shall regard you both as spies."