The two Harvard pace-makers are unable to hold this gait, and as Jack begins the backstretch of the second quarter at the same pace, they begin to lag, and little by little drop back. Suddenly Cowles awakens to the fact that he must depend upon his own efforts for the rest of the race, and starts after Jack at a sprinting gait. Jack hears the rapid steps close behind him, and tries a little stratagem of his own, hardly hoping that it will succeed against a veteran runner like Cowles. By slow degrees he swings out from the pole until nearly a yard away, leaving a tempting gap. By the rules, any runner passing another on the inside may be disqualified for fouling if so he interferes with the runner ahead, for the leading runner has a right to the pole, and a runner taking the inside does so at his own risk. Cowles knows the rules well, but decides to take the chance and save the two or three yards that passing on the outside would take. But just as he is almost abreast of the crafty Jack, the latter swings back to the pole, and Cowles has to stop almost short to avoid a collision, which by the rules would be blamed to him, and while his stride is broken Jack gains nearly ten yards. Now they are at the quarter-post again, and the first half-mile has been traversed in 2.08. Jack is still leading, and by degrees sets a slower and slower pace to save himself for the final effort in the stretch. But half-way around Cowles suddenly recognizes his tactics, and with an indignant effort takes the lead with that rapid even gait which seems to devour the ground, and which so imperceptibly draws away from a following runner if so be the latter relax his efforts in the least. Ah, the bitter third quarter! when the weakness creeps up from a runner's legs breast-high, and the laboring lungs feel as if iron bands were tight around them; when the head swims, and flashes come and go before the eyes, and every effort of body and mind is concentrated in a struggle not to let the white-jersey back just ahead draw away ever so little. Past the starting-post they go, and the others are hopelessly behind. There is a tremendous roar from the Harvard men as they begin the last quarter, and Cowles draws away ever so little from Jack. But the latter grits his teeth and calls upon his numb legs, and the gap closes up again. So they run like a tandem-team, and stride by stride the last quarter lessens and lessens.