At that time Lawrence Colby, the Putnam Hall chum of the older Rovers, was at the head of a military academy called Colby Hall. To this institution Jack, Fred and the twins were sent, as related in detail in the first volume of my second series, entitled "The Rover Boys at Colby Hall." This military school was located about half a mile from the town of Haven Point, on Clearwater Lake. At the head of the lake was the Rick Rack River, running down from the mountains and woods beyond. The school consisted of a large stone building facing the river at a point not far from where the stream emptied into the lake. Close by was a smaller building occupied by Colonel Colby and his family and some of the professors, and at a short distance were a gymnasium and a boathouse, and likewise bathing pavilions. On arriving at Colby Hall the younger Rovers found several of their friends awaiting them, including Dick Powell and Gifford Garrison. They also ran into Nappy Martell, who had been far from friendly with them while in New York, and likewise had trouble with an overgrown bully named Slugger Brown, who was Nappy's crony. As mentioned, Colby Hall was located about half a mile beyond Haven Point. On the opposite side of the town was Clearwater Hall, a boarding school for girls. During a panic at a fire in a motion picture house the Rover boys became acquainted with several girls from Clearwater Hall, including Ruth Stevenson, May Powell, Alice Strobell and Annie Larkins. They discovered that May was Dick Powell's cousin, and the whole crowd of young people soon became friends. Later on Mary and Martha Rover became pupils at the girls' school. Ruth Stevenson had an old Uncle Barney. The Rover boys, while out hunting one day, did the old man a great service, and for this he was so grateful that he invited them to spend their Winter holidays with him; which they did, as related in "The Rover Boys on Snowshoe Island." On this island the lads met their former enemies, Nappy Martell and Slugger Brown, as well as Asa Lemm, a discharged teacher of Colby Hall. The boys exposed a plot against old Uncle Barney, and in the end caused the old hunter's enemies to leave Snowshoe Island in disgust. "I guess we haven't seen the last of Nappy and Slugger," said Jack; and he was right. Those two unworthies turned up once again, as related in the volume entitled "The Rover Boys Under Canvas." In that book I told how the cadets went into their annual encampment and how after a Spring election for officers Jack was made captain of Company C and Fred made first lieutenant of the same command.