Page:Historic highways of America (Volume 16).djvu/73

Good Roads **Crops, 15, 30–31; as affected by, 46–47.
 * Drainage: need of, 15, 96–97; first principles of, 98–100; fallacy of building "breaks," 102–103; side ditches, 103–104; ditches must not become gullies, 104; how effected, 104–105; dangerous action of water, how avoided, 105–106; under drainage, 106–107; subdrains, 107–108.
 * Eldridge on principles of, 15, 85, et seq.
 * Education, as related to, 15, 18–20, 31–33.
 * Earth roads, construction, 15, 108–123.
 * Grading: formerly ignored, 15, 88; a study in (illustration), 89; most important factor in road-building, 92; ill consequence of lack of proper, 94; heavy loads impossible where road-builders neglect proper, 94–95; regulation of heavy, 95.
 * Gravel roads: principles of, 15, 126–140; view of, 127.
 * Land, untilled, in relation to, 15, 44–46.
 * Libraries and hospitals made available to rural residents, 15, 21.
 * Macadam roads: view of, 15, 83; the ultimate American road, 86; principles of, 142–160; cost of, 164–165; Page on "Selection of Materials for," 170–189; ideal described, 174; best stone for, 174–176; costly experiments on, 177–178; considerations to be noted concerning, 178–181;