It might easily have been made melodramatic by any hesitation as he approached, but, with a businesslike directness, he went right up to the men who held the fighting horse.He said: ''Put a saddle on him, boys, and I'll try my hand.''They could not answer at once, for Werther's ''pet,'' as if he recognized the newcomer, made a sudden lunge and was brought to a stop only after he had dragged his sweating handlers around and around in a small circle. Here Werther himself came running up, puffing with surprise.''Son,'' he said eagerly, ''I'm not aiming to do you no harm. I was only calling the bluff of those four-flushers.''The slender youth finished rolling up his left sleeve and smiled down at the other.''Put on the saddle,'' he said.