528 



THE INDEX 



Drag, road, 202, 213 f. ; King (ills.), 

 213, 214; log, 213; metal, 213; 

 principle of, 214 f. 



Drainage, 269-301 ; benefits of, 

 269 f.; contractors for, 274; 

 cost of, 270, 273; determination 

 of method to be used, 274; 

 factors bearing upon, 272 ff.; 

 final map of systems of, 301; 

 fixtures for house, 375; for over- 

 irrigation, 264; in relation to 

 road building, 203 f . ; in relation 

 to sanitation, 384, 385; influ- 

 ence of crops raised on kind of, 

 273 ; influence of soil on kind of, 

 273; landowners' objections to, 

 270; levees, 298 f.; open-ditch, 

 278 ff. ; outlet channel for, 273, 

 276 ff.; scientific planning and 

 management necessary to, 

 271 ff.; system for rolling lands 

 (ill.), 275; system for rolling 

 and flat lands (ill.), 300; tile, 281 

 ff.; topographic map necessary 

 for, 274; underdrainage, 281 f. 



Drainage canals, use of dynamite 

 for removing obstructions in, 

 192 » 



Drainage fittings, 374 ff. 



Drawings for records, 5 f. 



Dredge (ill.), 279 



Driving of logs, 108 



Drop siding, 116, 159 



Drouth, 251 



Drum for stoves, 408 



Dry farming, 251 



Dry rot, 1 1 2 



Duluth, Minn., temperature data 

 for, 75 



Du Pont, Lamotte, 175 



Dynamite, 176 ff. {see also Ex- 

 plosives); advantages of, 177 f.; 

 base of, 176; charge for, 178; 

 detonator, 179; effect of mois- 

 ture on, 177; effect of tempera- 

 ture on, 177; firing charge, 



184 f.; frozen, 186 f. ; misfire, 



185 f.; placing charge, 183; 

 precautions to observe in han- 

 dling, 187 f.; preparing charge, 

 179 ff.; safety fuse, 178; use 

 on farm, 188 ff. 



Efficiency of machines, 462 



IClcctric light: incandescent lamps 

 for, 434; plant equipment for, 

 432 ff. ; public utility service 

 for, 430; switchboard for plant, 

 432 f. ; switchboard wiring (ill.), 

 432; wiring for, 433 f.; wiring 

 layout for house and barn (ill.), 



43 1 . . 



Electricity {see also Ignition) : for 

 heating purposes, 419; for 

 lighting {see Electric light); 

 measurement of, 430 ff. 



Elm, 106, 122, 124 



Energy, 462 



Engines: bore of, 509; eight- 

 cylinder, 513; four-cycle, 510 

 four-cylinder, 512 f. ; gas, 483 ff. 

 six-cylinder, 513; steam, 482 f. 

 three-cylinder, 512; twelve- 

 cylinder, 514; two-cylinder, 

 511 f. 



Equal-arc method of determining 

 direction, 24 f . 



Erasers, when used for records, 



3» 6 



Errors, limit of, in surveying 



township lines, 94 



Estimating of distances, 11 f. 



Evaporation of rainfall, 76, 78 



Evener, or doubletree, 479 ff. 



Excavating, 3021!.; cost of, 302; 

 operations involved in, 302 f. 



Excreta, disposal of, 387 ff. 



Expansion, 402 



Explosive, definition, 173 



Explosives, 173-192; classes of, 

 1 74 ; dynamite {see Dynamite) ; 

 fulminate of mercury, 176; 

 gunpowder, 174 f.; nitrogly- 

 cerin, 175 f. 



Factor of safety in structures, 71 

 Fahrenheit, formula for convert- 

 ing to Centigrade, 23 

 Fall-block, 57 

 Fall-rope, 57 



Fargo, N. D., rainfall data for, 79 

 Farm buildings, 323-359; barns, 

 3 2 4> 335 ff- 5 chicken house, 

 341 f.; corn cribs, 324, 349 f.; 

 factors influencing location, 

 arrangement, and style of, 

 323 ff.; garage, 324, 353 f.; 

 granaries, 324, 349; hog house, 



