Spirit level; 230 Springs; 78-83 " drainage of; 34 " run before rain; 270-271 " how to preserve; 189 Staff and target; 231 Stagnant water; 93 Stone drains; 114-119, 377 " cost of; 114, 222 Stones above tiles; 118 Streams affected by drainage; 333-340 Subsoil plow; 169 Subsoiler, Marcus and Co.'s; 107 Surface washing prevented; 261 Swallow-holes; 197, 198 Swamps; 91, 360 " drainage of; 360-363 Swamp-lands; 17 Swan, R. J.; 168 System, importance of; 160, 173 Tables of evaporation; 72, 73 " excavation; 216 " filtration; 70, 71 " rain-fall; 53-59, 71-73 " of tiles to acre; 220 " number of rods; 220 " capacity of pipes; 135-138 Talpa; 23 Temperature; 67, 189, 280, 287-300 " underground; 187, 288, 291 " for vegetation; 271 Thermometer, wet and dry; 64, 65 Thomas, J. J.; 229 Tile-drainage; 120 Tiles, cost in England; 201, 212 " " United States; 201-205 " forms of; 122-130 " length of; 221 " size of; 130-138 " weight of; 219 " number to the acre; 220 Tile machines; 46, 202-210 Tile-works; 47, 121 Tools; 225-246 Tops and bottoms; 140, 319, 379 Traps; 185, 186, 379, 380 Velocity of water; 131 Vermin; 104 Virginia; 18, 364 Warder, Doctor; 346 Water, how it enters; 138, 314, 320 " stagnant; 93 " of drainage, uses of; 189, 339 " velocity of; 131 Water passage; 129 Water-line; 51, 139 Water-powers; 333, 335, 341-345 Water of pressure; 84, 161 Water, pressure of; 84, 140, 141 " rights in; 85, 86 Wedge drain; 110, 236 Weight of tiles; 219, 381 Wells, drainage into; 197-199 " dried by drains; 85, 366 Well and relief-pipe; 184-186 Well with silt trap; 186 Wharncliffe system; 44 Width of ditches; 215-218, 226 Wright, Gov.; 17 Yeomans, T. G.; 46, 108 * * * * * Transcriber's Note: Summarized here are the corrections applied to the text. List of Engravings: Drain Gauge "Gauge" was printed as "Guage" H. F. French's Drainage 376 the page number was printed as "374" unmindful of their obligations to him "unmindful" was printed as "unmindul" of gauging the quantity of water traveling along an important drain "gauging" was printed as "guaging" were removed, a pond would remain "would" was unreadable in the Original knowledge of the subject "knowledge" was printed as "knowlege" That drains will long continue to be opened in this vast country by hand labor "vast" was printed as "fast" the greater permanency of tiles "permanency" was printed as "permanancy" have come to our knowledge "knowledge" was printed as "knowlege" lay drains deep enough to be beyond the danger of water bursting in "bursting" was printed as "brusting" people of Great Britain "Britain" was printed as "Britian"