552 



INDEX 



Plows, 199; adjustment, 200; 

 construction, 200; disk, 204; 

 draft of, 204; engine gang, 

 208; gang, 201; harrow at- 

 tachment for, 219; hillside, 

 207; selection of, 199; size, 

 199; sulky, 201; types of, 

 199. 



Plumb line, 43. 



Plumbing, for houses, 497; fix- 

 tures, 497. 



Plungers, for pumps, 489. 



Poncelet's formula, 79. 



Population on farms, 183. 



Poplar wood, qualities and 

 uses, 196. 



Potatoes under irrigation, 120. 



Poultry houses, 425; construc- 

 tion details, 426 1 ; location, 

 425; size, 425; types, 432. 



Power, defined, 314; for light- 

 ing plant, 521; for pumping, 

 486; from horses, 327; meas- 

 urement of, 316; required 

 for machinery, 361; trans- 

 mission of, 320. 



Power mills, 298, 340. 



Preliminary survey, 64. 



Pressure gauge, 381. 



Prime movers, 313. 



Profile, leveling, 49; grade, 74. 



Prony break, 316. 



Pumps, 487; important fea- 

 tures of, 488. 



Pumping plant, 486. 



Pumpinng water, cost of with 

 engine, 363; for irrigation, 

 125. 



Pulleys, 322; calculating speed 

 of, 323. 



Purlines, 445. 



Pulverizers, 221. 



Quadrants, for transmitting 

 power, 324. 



Radiation, estimating, 529. 

 Radiators, 526, 529. 



Rakes, sweep, 268; sulky, 259; 



side delivery, 260. 

 Range of townships, 39. 

 Range pole, 21. 

 Rating, of tractors, 392. 

 Rectangle, area of, 34. 

 Reinforcement of concrete, 



412. 



Repair of machinery, 309. 

 Reservoirs, for irrigation, 123; 



home water supply, 493. 

 Resultant, defined, 314. 

 Resurveys, 40. 

 Reversible plow, 207. 

 Road drag, 150, 173. 

 Road grader, 97; elevating, 



169; scraping, 168. 

 Road machinery, 167; classes, 



167; scrapers, 167. 

 Roads, 141; benefits of good, 



142; brick, 165; clay, 153; 



earth, 147; extent of, 141; 



gravel, 154; history of, 14; 



requisites of good, 145; 



sand, 153; sand-clay, 153; 



scrapers for, 167; stone, 160. 

 Road rollers, 170. 

 Road stone, 160; testing, 161. 

 Rock crushers, 172. 

 Roller bearings, 191. 

 Rollers, for roads, horse, 170; 



land, 220; power, 171; tan- 

 dem, 171. 



Rope transmission, 323. 

 Round barns, 449. 

 Rubber belting, 321. 

 Run-off, computing, 80. 



Safety valve, 381. 



Sand, for building, 411. 



Sand-clay roads, 153. 



Sand roads, 153. 



Sanitation, 480. 



Scrapers, for disk harrows, 218; 



road, 167. 

 Sections of townships. 39. 



