INDEX. 



353 



Formation of rivers, 10 



Forms for concrete locks, 166-170, 317 



Formulae for discharge, Bazin's, 29 



D'Aubuisson and Downing's, 



34 



Kutter s, 34 



Fouache, M., device for deepening channels, 42 

 Foundations, locks, 140 



movable dams, 215 



piles, 140 



specifications, 314 

 Fox River, locks and dams, 276 

 Frames of wickets, 238 

 Framing lock gates, 181, 184 

 Free discharge, 29, 32 



Garonne River, regularization, 53 



report on reservoirs, 114 

 Gate dams, Boule, 241 

 Gates for locks, 174, 192 



removing bars, 42 

 Gauges, locks, 39, 163 

 slope, 38 

 tile, 40 



Gauge-tubes for measuring velocity, 36 

 General conditions, specifications, 297 

 General design, concrete locks, 163 



fixed dams, 200 



locks, 144 



movable dams, 210 

 General instructions to bidders, 294 

 German system of regularization, principles, 55 

 Girard shutter dams, 253 

 Government Works, injuries to, 344 

 Gravel for concrete aggregate, 165 

 Green River, locks and dams, 279 

 Gridiron valves for locks, 197 



Gros de Perrodil, inventor of hydrodynamometer, 37 

 Grundschwellen for regulation, 60 

 Guide cribs, 160 

 Gui lie-main, storage, 117 



Hagen, regularization, 52 

 Hand-rails on lock gates, 189 

 Harbor lines, establishment of, 343 

 Haupt, L. M., single jetty, 128 

 Hazard and White bear-trap dams, 261 

 Head bay walls of locks, 151 

 Height of levees, 81 



lock walls, 139 

 miter-sills, 155 

 sills of movable dams, 212 



Hewson, " Embanking Lands from River Floods," 76 

 High-water mark, changes in, 13 

 History of levees, 75 



movable dams, 208 

 needle dams, 217 

 U. S. improvements, 4 

 wicket dams, 227 



Hodges, Major H. F., '' Mitering Lock Gates," 175 

 Hooks, line, for locks, 162 

 Horizontal framing lock gates, 177, 181, 184 

 Horse for wicket dams, 236-238 

 Humphreys and Abbot, ratio of mid-depth, 34 

 Hurters for wicket dams, 229 

 Hydraulic dredge, 96 



gates for locks, 175 

 Hydrodynamometer, 37 

 Hydrographic discharge, 29 

 slope, 38 

 soundings, 25 

 surveys, 25 



Improvement of by canalization, 132 

 open rivers, 41 

 nver outlets, 122 



Influence of levees on flood levels, 95 



reservoirs on flood levels, 101-108 

 Injuries to Government Works, 344 

 Instructions to bidders, specifications, 294 

 Invention of locks, 2 



movable dams, 208 



Investigation river bed for foundations, 134 

 Iota, dredge, 47 

 Irun and steel specifications, 328 



Jacquet, advantages of regularization, 63 

 Janicki, formation of rivers, 10 

 Jetties on the Mississippi, 129 



single, 128 



Jets for removing bars, 44 



Johnson, Prof. J. B., "Theory and Practice of Sur- 

 veying," 20 



Joint, miter, in lock gates, 189 

 Joinville, bear-trap dam at, 259 



Kanawha dams, 272, 280 



Kentucky River locks and dams, 283 



Kinds of lock gates, 174 



movable dams, 209 



timber for lock gates, 182 

 Klecan, Bohemia, dam at, 269 

 Kutter's formula, 34 



Ladders for locks, 163 



La Mulatiere dam, 231 



Land, acquisition of, for sites, 135 



Lang type of bear-trap dam, 263-265 



Laws for protecting navigable waters, 342 



Length of fixed dams, 199 



pass and weir, 213 



Leonardo da Vinci, inventor of locks, 146 

 Levees, 75 



banquettes, 88 



causes of failure, 89 



construction, 85 



cost, 98 



crevasses, 93 



drainage, 94 



efficiency, 97 



foreign, 98 



height, 8 1 



history, 75 



influence on floods, 95 



leakage, 90 



location, 76 



Loire, 100 



maintenance, 89 



materials, 82 



muck-ditch, 86 



objections raised to, 97 



Po, 98 



protection, 88 



scouring of river bed, influence on, 96 



section, 77 



sloughing, 91 



Theiss, 99 



wave wash, 93 



Leveling, ordinary and precise, 23 

 Liability of Masters and Pilots, 345 

 Libschitz, Bohemia, dam at, 270 

 Life of lock gates, 189 

 Lift of locks and dams, 138, aio 

 Line hooks for locks, 162 

 Little Kanawha locks, and dams, 282 

 Location of chute in dredging, 47 

 levees, 76 



works in canalization, 132 

 Locks, 146 



acquisition of land for, 135 

 angle of miter sill, 155 

 arrangement of, 136 



