The Riverlawns crossed the bridge in safety, all but two men, a private of the sixth company, who quickly swam his horse ashore, and Sandy Lyon. Sandy had a spirited horse, and was advised to lead him over; but the lieutenant insisted on riding, and when the middle of the bridge was reached, his horse shied, and Sandy slid overboard like a flash. He went down, to come up at a point fifty feet down the turbulent stream. "Help! help!" he yelled, as soon as he could eject the water from his mouth. "Some of you fellows haul me out!" "Can't you swim?" asked several, unwilling to endure a wetting if it was not necessary. "I can't swim much--ain't swum in five years," came in a gasp, "and this clothing weighs a ton!" Artie Lyon had seen Sandy go overboard, and now he drew his uncle's attention to the scene. Titus was very much excited on the instant. "Save Sandy--save my boy!" he cried, and he tried to leap overboard, but Artie hauled him back. "You can't swim, can you?" asked the captain. "No--but--I don't want Sandy to drown!" panted Titus Lyon. "I've lost one son already in this war!" "There is a boat--I'll get that and go after Sandy," answered Artie. "You stay here;" and he motioned for two cavalrymen standing near to hold Titus and thus prevent him from throwing himself into the rushing element. The boat was a flat-bottomed affair, owned by an old fisherman of Caperton. The oars were handy, and Artie was soon on a seat in the craft. As he pushed off Life Knox leaped in beside him. "Reckon two rowers are better nor one," said the tall Kentuckian, and without a word Artie tossed him an oar. Soon the boat was making good headway down the stream in the direction in which Sandy's head could be seen bobbing up and down. "Help me!" he cried again. "I'm played out!" "Keep up a little longer,--we are coming," replied Artie, encouragingly. "I can't keep up--something is fast to my foo--" And the words ended in a gurgle, as Sandy suddenly disappeared. "Why, what can this mean?" asked the young captain. "Has he caught his spurs into each other?" "More than likely he got tangled up in one of those boat chains," remarked Life Knox. "I noticed the chains hanging around when the bridge was put down." "Then they'll take him to the bottom, sure," said Artie, and grew more anxious than ever for his cousin's safety. The disappearance of Sandy had been noticed from the bridge and from both shores, and now several small boats put out. Titus Lyon broke away from those who held him and went overboard with a loud splash, and two minutes later a boat picked him up, more dead than alive. When Artie and Life reached the spot where Sandy had disappeared, nothing was to be seen of the young lieutenant, and a blank look seized upon the faces of the would-be rescuers. Suddenly, however, the tall Kentuckian gave a leap to the stern. "There he is!" he shouted. "Where?" "Under water several feet. He is going down!"