"The trouble is with you and not with the algebra. You were alluding in a depreciatory manner to my head but it's your own head that fails. When I said algebra was a beautiful and romantic study I used the adjectives purposely. Out of thousands of adjectives in the dictionary I selected those two to fit the case. What could be more delightful than an abstruse problem in algebra? You never know along what charming paths of the mind it will lead you. Moreover there is over it a veil of mystery. You can't surmise what delightful secrets it will reveal later on. What will the end be? What a powerful appeal such a question will always make to a highly intelligent and imaginative mind like mine! No poetry! No beauty! Why every algebraic problem from the very nature of its being is surcharged with it! It's like the mystery of life itself, only in this case we solve the mystery! And if I may change the metaphor, an algebraic formula is like a magnificent diamond, cutting its way through the thick and opaque glass, which represents the unknown! I long for the end of the war for many reasons, but chief among them is the fact that I may return to the romantic and illimitable fields of the mathematical problem!" "I didn't know anyone could ever become dithyrambic about algebra," said Dick. "What's dithyrambic?" asked Pennington. "Spouting, Frank. But George, as we know, is a queer fellow. They grow 'em in Vermont, where they love steep mountains, deep ravines and hard mathematics." They had been speaking in low tones, but now they ceased entirely. Shepard had come back from the forest, reporting that the junction of the roads was near, and the Confederate force was marching toward it at the utmost speed. The hostile columns might be in conflict in a half hour now, and the men prepared themselves. Innumerable battles and skirmishes could never keep their hearts from beating harder when it became evident that they were to go under fire once more. After the few orders necessary, there was no sound save that of the march itself. Meanwhile the moon and stars were doing full duty, and the night remained as bright as ever. CHAPTER IV THE FIGHT AT THE CROSSWAYS Colonel Hertford was near the head of the Union column, while the three youths rode a little farther back with Colonel Winchester, the regiment of Colonel Bedford bringing up the rear. Just behind Dick was Sergeant Whitley, mounted upon a powerful bay horse. The sergeant had shown himself such a woodsman and scout, and he was so valuable in these capacities that Colonel Winchester had practically made him an aide, and always kept him near for orders. Dick noticed now that the sergeant leaned a little forward in his saddle and was using his eyes and ears with all the concentration of the great plainsman that he was. In that attitude he was a formidable figure, and, though he lacked the spy's subtlety and education, he seemed to have much in common with Shepard.