Although Tietjens hated golf as he hated any occupation that was of a competitive nature he could engross himself in the mathematics of trajectories when he accompanied Macmaster in one of his expeditions for practice. He accompanied Macmaster because he liked there to be one pursuit at which his friend undisputably excelled himself, for it was a bore always brow-beating the fellow. But he stipulated that they should visit three different and, if possible, unknown courses every week-end when they golfed. He interested himself then in the way the courses were laid out, acquiring thus an extraordinary connoisseurship in golf architecture, and he made abstruse calculations as to the flight of balls off sloped club-faces, as to the foot-poundals of energy exercised by one muscle or the other, and as to theories of spin. As often as not he palmed Macmaster off as a fair, average player on some other unfortunate fair, average stranger. Then he passed the afternoon in the club-house studying the pedigrees and forms of racehorses, for every club-house contained a copy of Ruff's guide. In the spring he would hunt for and examine the nests of soft-billed birds, for he was interested in the domestic affairs of the cuckoo, though he hated natural history and field botany. On this occasion he had just examined some notes of other mashie shots, had put the notebook back in his pocket, and had addressed his ball with a niblick that had an unusually roughened face and a head like a hatchet. Meticulously, when he had taken his grip he removed his little and third fingers from the leather of the shaft. He was thanking heaven that Sandbach seemed to be accounted for for ten minutes at least, for Sandbach was miserly over lost balls and, very slowly, he was raising his mashie to half cock for a sighting shot. He was aware that someone, breathing a little heavily from small lungs, was standing close to him and watching him: he could indeed, beneath his cap-rim, perceive the tips of a pair of boy's white sand-shoes. It in no way perturbed him to be watched since he was avid of no personal glory when making his shots. A voice said: "I say . . ." He continued to look at his ball. "Sorry to spoil your shot," the voice said. "But . . ." Tietjens dropped his club altogether and straightened his back. A fair young woman with a fixed scowl was looking at him intently. She had a short skirt and was panting a little. "I say," she said, "go and see they don't hurt Gertie. I've lost her . . ." She pointed back to the sandhills. "There looked to be some beasts among them." She seemed a perfectly negligible girl except for the frown: her eyes blue, her hair no doubt fair under a white canvas hat. She had a striped cotton blouse, but her fawn tweed skirt was well hung. Tietjens said: "You've been demonstrating." She said: "Of course we have, and of course you object on principle. But you won't let a girl be man-handled. Don't wait to tell me I know it . . . ."