For our climate and soil, no doubt, a macadamized road is the cheapest and best for general travel. This is made by covering the bottom of the road-bed with stones broken into angular pieces to a depth of from four to twelve inches. The bottom of the road-bed should be solid earth, and crowned sufficiently to carry off all water that may reach it. The depth of the stone coating may properly vary from four to twelve inches, as required by the nature of the soil, the climate, and the travel on it; and the size of the broken stones may also be varied to meet the requirements of the road. If there is to be heavy travel on the road, the stone coating should be thicker than on a road over which only lightly loaded teams are expected to pass; and in the former case the broken stones should be larger than in the latter case. In any event, the top of the stone coating should be composed of stones broken into small fragments. A coating, from four to six inches in depth, of broken stones from one to two inches in diameter is ordinarily sufficient to make a hard, dry, and beautiful country-road, if kept up at all seasons of the year. Flat or round stones should never be used, because they will not unite and consolidate into a mass, as small angular stones will do. When travel is first admitted upon the stone coating, the ruts should be filled up as soon as formed; or what is better, a heavy roller should be used until the stones have become well consolidated. Sometimes in wet or clayey soil it is well to put at the bottom of the stone coating a layer of large stones, set on their broadest edges and lengthwise across the road in the form of a pavement. This is called a Telford road, and has advantages over the McAdam road in a soil retentive of moisture, as the layer of large stones operates as an under drain to the stone coating above it.