Making the transition from the political hot spot of the nation's capital to the slower pace of rural New Hampshire would seem like an illogical step for a government professor. Yet visiting Georgetown University Government Professor Christopher Joyner has done just that, fleeing Washington D.C., for his second summerto come teach at the College. "They asked me if I would be interested in coming, and it's worked such that each of those years I had the opportunity available," he said. The quality of the students at Dartmouth is one of the reasons he enjoys coming here in the summer, Joyner said. "They are first rate," he said.