The road-bed should generally be raised above the level of the surrounding land, in order that it may be as free as possible from water; and it should "crown" sufficiently to allow all the surface water, to find its way quickly into the side ditches. If it is not crowned enough, it soon becomes hollow, and therefore either muddy or dusty, and in times of heavy rains or thaws the water stands or flows in the middle of the road. If it is crowned too much, the drivers of vehicles will seek the middle of the road in order to keep their vehicles in level positions, and consequently the excessive travel in one part of the road soon wears it into ruts in which water accumulates, and carriages in meeting are forced to travel on a side hill, which causes unnecessary wear to the road by sliding down towards the ditches. This sliding tendency greatly augments the labor of the horses and the wear and tear of the carriages. Evidently, then, the wise course to pursue in the matter of crowning the road is to hit the golden mean. Much of success in life depends upon striking the golden mean, for human experience teaches that those who follow in this pathway are apt to find themselves among the happy and the successful. The advice which the wise old Horace made a sage seaman give two thousand years ago is good for road-makers of to-day,-- "Licinius, trust a seaman's lore: Steer not too boldly to the deep; Nor dreading storms by treacherous shore Too closely creep." It ought therefore to be an accepted maxim in road-making that the road-bed should be so constructed as to induce vehicles to travel it equally in every part.