Index 



497 



L^d plaster, for alkalies, 280, 284, 287. 



Laterals, subdivision, 223; length and 

 size, 452 ; outlet, 454 ; junction, 464; 

 cost, 490. 



Lawn, irrigation, 391 ; cost of plant, 393; 

 method, 395. 



Laveleye, E., 75. 



Leaching, 222; may assist nitrification, 

 12; prevents alkali, 223, 284, 288; nec- 

 essary, 275. 



Leveling, methods, 471, 473, 477. 



Levels, methods, 469; instruments, 470. 



Lois Weedon, system of intertillage,157. 



Lombardini, 260. 



Lombock, irrigation, 87. 



Lettuce, irrigation, 385. 



Lew Chew, irrigation, 83. 



Loughridge, R. H., 229. 



Madagascar, irrigation, 86. 



Madeira, irrigation, 86. 



Maeris, Lake, 66. 



Mains, 451, 457; size, 451; length, 452; 

 cost, 490. 



Maize, water used, 21, 24, 38, 39, 41, 46, 

 60, 177, 234 ; flint and dent, 40, 184; 

 roots, 61, 160; yields and rainfall, 109; 

 yield increased by irrigation, 110, 177; 

 observed yields, 126, 177, 190; varia- 

 tion of yield with soil moisture, 144 ; 

 rain of growing season, 124 ; maxi- 

 mum limit of yield, 187; need for air, 

 182,185; close planting, 184,193; yields 

 with varying closeness of planting, 

 190; duty of water, 211, 215; frequency 

 of irrigation, 235. 



Mangon, water on water-meadows, 219. 



Marcite, 219. 



Markus, E., duty of water, 203. 



Meadows, water, 16, 92, 219, 251, 359; 

 Craigentinny, 16, 92, 254, 403 ; English, 

 76, 360; Italian, 362; Belgian, 362; 

 mountain, 365; marcite, 219; duty of 

 water, 219; sewage, 220, 254; mulch- 

 ing, 146; irrigation, frequency, 237. 



Measurement of water, 239; units, 239; 



methods, 241; by time, 242; subdivi- 

 sion of laterals, 243 ; with divisors, 

 244; modules, 245. 



Melons, irrigation, 388. 



Milan, sewage irrigation, 220. 



Milk, from sewage grass, 256. 



Miner's inch, 241. 



Mississippi, annual discharge, 117. 



Modules, 245; spill-box, 245. 



Mulches, 145; of soil, 142; effectiveness 

 in arid climates, 104; lose effective- 

 ness, 145, 164; for meadows, 146; in- 

 fluence of depth, 147, 206; vary with 

 kinds of soil, 201; production after 

 irrigation, 381. 



Neerpelt, water-meadows, 362. 



Newell, F. H., irrigation, 88; dry farm- 

 ing, 102; run-off, 119. 



New Jersey, water analyses, 252. 



New Mexico, frequency of irrigation, 

 238. 



Nile, irrigation, 67, 84, 262, 288; daily 

 discharge, 85; delta, 68; sediment in 

 water, 260. 



Nitrates, in artesian waters, 85 ; in 

 river water, 252; in sewage, 404. 



Nitrification, in arid soils, 7; needs wa- 

 ter, 11 ; influenced by drainage, 13, 

 420; effect of tillage, 149, 163, 165; 

 needs oxygen, 183, 334, 370, 418. 



Nitrogen-fixing tubercles, 233. 



Oats, water used, 21, 24, 31 ; 41, 46; rain 



of growing season, 124; yields, 126; 



water needed, 215. 

 Oranges, frequency of irrigation, 238; 



furrow irrigation, 374. 

 Orchards, irrigation, 338, 373; frequency 



of irrigation, 238; ring furrows, 380; 



cultivator, 381; cultivation, 381, 383; 



sub-irrigation, 398. 

 Osmotic pressure, 63. 



Paecottah, 327. 

 Palms, irrigation, 85. 



