For all her dullness, it was a signal from Sally that saved Andrew. She jerked up her head and turned; he looked in the same direction and saw a form like a gray ghost coming over the hills to his left, a dim shape through the rain. Gloomily Andrew watched Hal Dozier come. Gray Peter had been fresher than Sally at the end of the run of the day before. He was fresher now. Andrew could tell that easily by the stretch of his gallop and the evenness of his pace as he rushed across the slope. He gave the word to Sally. She tossed up her head in mute rebellion at this new call for a race, and then broke into a canter whose first few strides, by way of showing her anger, were as choppy and lifeless as the stride of a plow horse. That was the beginning of the famous ride from the Las Casas mountains to the Roydon range, and all the distance across the Roydon valley. It started with a five-mile sprint--literally five miles of hot racing in which each horse did its best. And in that five miles Gray Peter would most unquestionably have won had not one bit of luck fallen the mare. A hedge of young evergreen streaked before Sally, and Andrew put her at the mark; she cleared it like a bird, jumping easily and landing in her stride. It was not the first time she had jumped with Andrew. But Gray Peter was not a steeplechaser. He had not been trained to it, and he refused. His rider had to whirl and go up the line of shrubs until he found a place to break through. Then he was after Sally again. But the moment that Andrew saw the marshal had been stopped he did not use the interim to push the mare and increase her lead. Very wisely he drew her back to the long, rocking canter which was her natural gait, and Sally got the breath which Gray Peter had run out of her. She also regained priceless lost ground, and when the gray came in view of the quarry again his work was all to do over again. Hal Dozier tried again in straightaway running. It had been his boast that nothing under the saddle in the mountain desert could keep away from him in a stretch of any distance, and he rode Gray Peter desperately to make his boast good. He failed. If that first stretch had been unbroken--but there his chance was gone, and, starting the second spurt, Andrew came to realize one greatly important truth--Sally could not sprint for any distance, but up to a certain pace she ran easily and without labor. He made it his point to see that she was never urged beyond that pace. He found another thing, that she took a hill in far better style than Peter, and she did far better in the rough, but on the level going he ate up her handicap swiftly. With a strength of his own found and a weakness in his pursuer, Andrew played remorselessly to that weakness with his strength. He sought the choppy ground as a preference and led the stallion through it wherever he could; he swung to the right, where there was a stretch of rolling hills, and once more Gray Peter had a losing space before him.