They have rumbled through the streets, and jolted over the stones, and at length reach the wide and open country. The wheels skim over the hard and frosty ground; and the horses, bursting into a canter at a smart crack of the whip, step along the road as if the load behind them—coach, passengers, cod-fish, oyster-barrels, and all—were but a feather at their heels. They have descended a gentle slope, and enter upon a level, as compact and dry as a solid block of marble, two miles long. Another crack of the whip, and on they speed, at a smart gallop, the horses tossing their heads and rattling the harness, as if in exhilaration at the rapidity of the motion; while the coachman, holding whip and reins in one hand, takes off his hat with the other, and resting it on his knees, pulls out his ha