INDEX

Spillway Dam, constructionof, 229-235, 250-251,253, 254

operation of gates of, 186,255

Spillway Hill, water-pressureexperiments at, 170,171

Spillways, 167, 184-186, 250-255, 286, 287Statistics:

cost of Panama Canal con-struction, 324-327Culebra Cut, excavation of,270

French excavation work,13, 14

water supply for locks,33

Steam shovels, 63, 64, 65, 77,78, 82, 87, 88, 192, 193,

194, 203, 204, 205, 228,236

efficiency in operation of,77, 78, 274

Steams, Frederick P., 17, 19,22

Stevens, John F., 2, 3, 20on lock-canal plan, 25Stickle, Horton W., 8Storage of concrete material,215, 216, 289

Street-paving in Panama andColon, 59

Sullivan, John G., 3Swamp drainage by dredge,

195, 293

Telephones, 83Thatcher, Maurice H., 4, 6Tidal variations, between At-lantic and PacificOceans , 281, 282in Miraflores Locks, 287Time of passage through Pan-ama Canal , 35, 36Tincauzer, Eugen, 17, 19Tolls, 312

Toro Point quarry, 190Towing locomotives, 174, 182,183, 314, 315

Track-shifting in Culebra Cut,275

Transportation, of Colon wa-ter supply, 45, 46of concrete materials, 200-202, 215, 290

of construction material,40, 41, 188-192of food supplies, 46, 47, 48,105

Trestles, for concrete storage,289

for dumping fill, 155, 156,190-192, 208, 231-234,236, 249, 255Tubby, William G., 3Typhoid epidemic in Gatun,297

Unloaders, 90

Valves at lock gates, 179, 180

Walker, John G., 1Wallace, John F., 2, 20

338