534 



THE INDEX 



Radiation, 414 



Radiators for hot-water heating 

 plant, 414; valves for (ill.), 415 



Rainfall: as affecting crop pro- 

 duction, 76, 78 ff.; cycles, 72, 

 75 f . ; disposal of, 76 ff.; in 

 humid climates, 250; in rela- 

 tion to irrigation, 250 



Ram, hydraulic, 371 f. 



Random line, 83, 90 



Range, 91 



Ratchet drive, 473 



Reaming tool (ill.), 414 



Records and reports, 1-6; ap- 

 pearance of, 5; arrangement 

 of data for, 5 ; checking of, 3 f . ; 

 clearness necessary in, I, 4; 

 correction and source of errors 

 in, 4; drawings for, 5 f. ; index 

 for, 5; materials for keeping, 

 2 f . ; methods of keeping, 3 ff . ; 

 signature for, 6; technical 

 terms in, 4; title for, 3 



Red River of the North, evapo- 

 ration of rainfall in, 79 f., 81 



Redwood, 106 



Reeving, 58 f. 



Repair shop, 354 ff.; plan for, 355 



Reports. See Records 



Reservoirs, 262 



Resurveys, 84, 96 ff. ; corners as 

 evidence, 97 f., 104; object of, 

 96 f. 



Rf. lumber, 117 



Richland County, N. D., rainfall 

 statistics for, 77 



"Right," definite meaning of, 4 



Ringshake, 112 



Riparian rights, 95, 105 



Road drag. See Drag 



Roads, 193-219; administration 

 of, 217 f. ; burned clay, 210 f.; 

 charcoal, 211; clay, 205; con- 

 struction of, 202 ff. ; corduroy, 

 209; crop transportation as 

 affected by, 198; cross section 

 of, 204 ff.; development of, 

 193 ff.; drag for, 213 ff.; drain- 

 age in relation to, 203 f., 

 269 f. ; economic advantages 

 of good, 195 f.; grade for, 203; 

 gravel, 205 f . ; importance of, 

 193, 196 ff.; kinds of, 205; 

 labor-tax versus cash-tax sys- 



tem of administering, 217 f.; 

 loam, 205; local problems in 

 connection with, 201 ; macadam, 

 206; maintenance costs, 215; 

 materials for, 201 f., 205 ff., 

 209 ff. ; need of systematic 

 maintenance of, 212; oiled, 

 207 ; pavements for, # 207 ff. 

 {see also Pavements); plank, 

 210; qualities of good, 201; 

 repairing of, 212; Roman, 193, 

 204; sand-clay, 210; shell, 

 211; social advantages of good,- 

 196; telford, 206 f . ; volume of 

 traffic over, 197 f. 



Rod, 9 



Roofing: paper, 166; rolled, 316; 

 shakes, 164; shingles, 164 ff., 

 315; tar-and-gravel, 166, 316 



Roofs, 311 ff., 328; broken-gable, 

 311; curb, or gambrel, 312; 

 full-monitor, 313; gable, 311; 

 gutters for, 413; half -monitor, 

 313; hip, 313; mansard, 313; 

 pitch of, 314; projection, using 

 open cornice and brackets (ill.), 

 313; rafter arrangement for 

 (ill.), 312; relation of type to 

 storage capacity (ill.), 312; 

 shed, 311; valleys of, 314 



Roosevelt, Theodore, quoted, 193 



Roosevelt Dam (ill.), 263 



Root cellar, 350 ff.; plans for, 



351, 352 

 Rope, 28-62; blocks and tackle, 

 57 ff.; breaking strength of, 



31 f., 33; care of, 33; construc- 

 tion of, 29 f . ; fibers used in 

 manufacture of, 30 f . ; general 

 information about, 33; how 

 sold, 31 ; hitches and ties, 48 f.; 

 knots, 35 ff.; loops, 43 ff.; pre- 

 venting ends from untwisting, 

 36 ff.; relaying untwisted, 35; 

 safe load for, 31 f., 33; splices, 

 50 ff.; strength of , 3 1 ; tarring, 

 31; uncoiling, 34 f. ; weight of, 



32 f . ; whipping, 36 



Rope for transmitting power in 



machines, 471 

 Rotary valve, 515 

 Round turn (ill.), 36 

 Run-off, 76, 80 f., 273 f. 

 Rustic siding, 117, 121, 159 



