534 



EXPERIMENT STATION RECORD 



Soil— Continued. 

 fungi- 

 activity, (40) 122, 318, 721. 



ammonifying efficiency, (32) 817. 



and their activities, (36) 214, 215. 



in a forest nursery, (40) 852. 



incubation studies, (35) 513; (36) 221. 



notes, (27) 223. 



of Norway, (34) 226. 



pathogenic, control, (40) 747. 



proteolytic activities, (40) 721. 



relation to potato diseases, (39) 249. 



studies, (28) 442; (31) 127. 

 gas, radioactivity, (33) 211. 

 gases, studies, (34) 514; (35) 120, 212. 

 grains, properties, (32) 617. 

 granulation, causes, (26) 420. 

 granulation products, classification, (31) 418. 

 homogeneity, correlation coefficient for, (33) 727. 

 humidity, effect on development of cotton, (34) 



337. 

 hygiene, notes, (30) 125. 



leachings, equipment for investigation, (32) 719. 

 microflora and microfauna, device for obtain- 

 ing, (30) 28. 

 microorganisms- 

 activities, (35) 25. 



ammonia accumulation by, (37) 812. 



ammonia consumption by, (35) 729. 



longevity on drying, (34) 732. 



nitrate transformation by, (38) 723. 



nitrogen requirements, (31) 313. 



notes, (28) 323; (29) 122, 123, 515. 

 milling machines, tests, (33) 891. 

 moisture and plant succession , (37) 418. 

 moisture as affected by- 

 alfalfa, (29) 634. 



cropping, (29) 425. 



crops, (33) 225; (34) 17. 



density of stand of trees, (33) 816. 



desert rainfall, (30) 619. 



fallowing, (26) 421, 533. 



fertilizers, (28) 124; (33) 217. 



organic matter, (40) 811. 



tillage methods, (40) 719. 

 moisture — 



classification and measurement, (39) 18. 



coefficient, (29) 626. 



conservation, (29) 85, 211, 725; (31) 419, 494; 

 (32) 30, 525; (33) 217; (36) 723; (37) 212, 437. 



content during drought, (39) 617. 



content, effect on growth of barley, (40) 219. 



content of surface foot, (39) 813.. 



determination, (28) 204; (32) 216, 719; (39) 

 714. 



determination, interpreting, (26) 421. 



determination, reporting results, (39) 504. 

 moisture, effect on— 



acidity, (40) 316. 



availability of fertilizers, (28) 420. 



availability of plant nutrients, (28) 537. 



composition of grain, (27) 334. 



fertilizers, (32) 813, 814. 



growth and maturity in maize, (39) 20. 



growth of cucumbers, (30) 142. 



nitrification, (28) 720. 



plant asociations, (38) 425. 



potato tubers, (36) 336. 



protein content of wheat, (30) 662, 836. 



rate of increase of sugar beet root louse, (33) 

 357. 



ratio of tops to roots in plants, (31) 628. 



root development, (26) 327. 



salts and nitrates, (36) 816. 



wheat, (32) 814; (37) 340. 



winterkilling of cereals, (38) 415. 

 moisture- 

 equivalents, (26) 421; (39) 214, 215. 



evaporation inde-x, (30) 223. 



factors affecting, (26) 421; (27) 320; (28) 218. 



field study of, (28) 537. 



in forests and cultivated fields, (37) 418. 



inactive, measurement, (36) 719. 



loss by evaporation, and transpiration, (38) 

 418. 



loss by percolation, (33) 619; (38) 418. 



minimum, dynamic, determination, (38) 

 719. 



movement, (27) 500. 



movement and distribution, (37) 623, 808. 



Soil— Continued. 



moisture— continued . 



movement in an Egyptian cotton field, 

 (30) 21. 



movement in relation to temperature, (34) 

 215. 



notes, (30) 814. 



of surface foot, effect on nitrification, (40) 

 719. 

 moisture, relation to — 



apple spot diseases, (38) 753. 



dry fanning, (28) 321. 



forests, (36) 843. 



orange growth, (38) 541. 



plant activities, (27) 214. 



plant growth, (26) 420; (32) 813. 



plant succession, (32) 128. 



root systems of plants, (31) 514. 



temperature, (34) 127. 



transpiration and photosynthesis in corn, 

 (36) 525. 



wilting of plants, (27) 515. 

 moisture- 

 retaining, (27) 619. 



review of investigations, (31) 522. 



studies, (28) 419; (29) 620, 724; (34) 816; 

 (35) 212; (38) 620. 



under different cropping systems, (40) 429 . 



under dry farming, (38) 319. 



under irrigation, (38) 320. 



unfree, and heat of wetting, relation, (40) 

 20. 

 mulch, effect on evaporation, (28) 218. 

 mulch, paper on, (36) 197. 

 nitrates as affected by- 

 green manuring, (33) 721. 



resin and tannin, (36) 513. 



weeds, (38) 814. 

 nitrates, effect on wheat yield, (33) 217. 

 nitrogen as affected by- 

 crops and fertilizers, (35) 321. 



heat, (39) 617. 



legumes, (26) 196. 



organic materials, (35) 218. 

 nitrogen— 



availabihty, (26) 434. 



forms of, (33) 513. 



meteorological and biological factors affect- 

 ing, (32) 718. 



studies, (28) 814. 

 organisms, ammonia accumulation, relation to 



carbon dioxid production, (39) 516. 

 organisms as affected by — 



bacterioto-xins, (28) 628. 



carbon bisulphid, (33) 323; (35) 20. 



carbon disulphid and toluol, (40) 513. 

 organisms- 

 culture media for, (40) 739. 



destruction of cellulose by, (26) 825. 



destruction of paraffin by, (32) 523. 



effect of to.xic substances on, (31) 342. 



factors affecting growth, (32) 222. 



microscopic study, (39) 324. 



monograph, (30) 323. 



nitrifying, (39) 619. 



nitrogen-fixing power, (32) 29. 



proteolytic activities. (40) 721 . 



rapid study of, (35) 226. 



spore-forming, (39) 325. 



steam-formalin treatment for, (29) 645. 

 particles, distribution, (32) 511. 

 particles, separation according to speciflo 



weight, (31) 616. 

 phosphates— 



as affected by ignition, (26) 803. 



solubUity, (26) 726. 



solubility as affected by ignition, (28) 312. 



physics — 



and management, textbook, (38) 598. 



discussion, (26) 717. 



instruction in, (26) 434. 



laboratory manual, (28) 493. 



manual, (34) 293. 



review of investigations, (30) 119. 



studies, (26) 28; (27) 214, 819. 

 plats, biological variations in, (37) 719. 

 potash as affected by lime or gypsum, (36) 519. 

 potash, availability as affected by various'sub- 

 stances, (36) 625. 



