Some days he would ride along for miles, humming or singing a single tune, while a train of thought for his next sermon was building itself up in his mind. Selim, the fine young sorrel, knew quite well what to do, and fell into a walk or a gentle canter, according to the briskness or volume of the notes that rose over his back. If "How-tedious-and-tasteless-the-hours, when-Jesus-no-longer-I-see," trailed out softly, with long and undevised breaks in the continuity of sound and sense, Selim walked demurely, and saw no ghosts or interesting things whatsoever in woods or stream or distant valley. But when "Joy to the world! The Lord has come!" rang out, continuous and clear, Selim knew that he might even shy at a stone, and make believe a set state of terror at sight of a familiar old post or a startled groundhog; or that if he were to break into an unexpected gallop, no harm would be done, and that he would be pretty sure of some playful remarks and a bit of teasing from the rider, whose sermon, Selim knew full well, was finished. But so long as "Joy to the mm-mmmm-mmmmm-mmm-Let earth mmmm--mmmmmmmmher King," greeted his ears, Selim knew that the responsibility of ford or path rested with him, and many a ford did Selim take before his rider realized that he had come to it. If swimming were necessary, Selim struck out with a powerful stroke, and came up on the other bank with a proud stamp of his feet and a whinny that bid for the recognition of his prowess that he knew was sure to come to him. "Whoa, old fellow! Stop and get your wind! Steady! That was a pretty stiff current, wasn't it? There, take a nibble! Been some pretty heavy rains around here, haven't there? But what do you and I care about rains and currents? Whoa, there, you rascal, keep your nose off my sleeve! O, you will, will you? Well, there, there, there, I've wiped it all off as good as ever. T-h-a-t's right; nip off some of these fresh buds. Here, let's take our bit out. Tastes better, doesn't it? Oh, you will, will you, old wet nose? Ha! ha! ha! Selim, you know more than most folks, you old hum-bug!" If his master sat down and became absorbed in thought, or in his little black book, Selim would browse about for an hour; but at the first note of a hymn the faithful fellow came to have his bridle replaced, and was ready for a gallop or a walk, as his rider should indicate.