992 



EXPERIMENT STATION RECORD. 



[Vol.41 



Soil — Continued. 



erosion in a drainage chaimol, -IS."!, 

 erosion in Indiana, Ind., l''>0. 

 erosion, studies. Mo., 622. 

 experiment fields, crop yields from, 



111., 218. 

 extract as affected by manure, 420. 

 extract, determination of magnesium 



in, 313. 

 fertility experiments, Ind., 218 ; Mass., 

 21 ; Mo., 624 ; N.C., 624 ; N.Dak., 

 822. 

 fertility experiments in Xetherlands, 



638." 

 fertility investigation in India, 131. 

 ertility, relation to microbiological 



data, 321. 

 fungi injuring plants, 655. 

 fungi, proteolytic enzyms, 822. 

 Inoculation, 125. 



(See also Legumes, inoculation.) 

 management, books on, 419, 624. 

 moisture — 



as affected by cultivation, 129. 

 as affected by cultivation and 



cropping, Mo., 622. 

 as affected by cultivation and 



Vfeed growth, Kans., 33. 

 as affected by various crops, N. 



Dak., 823. 

 changes, effect on soil proi)(>rties, 



N.Y.Cornell, 121. 

 content, relation to solubility, 



Mich., 512. 

 excess of, effect on root develop- 

 ment, 820. 

 holding capacity, capillary, 422. 

 relation to biological activity. 812. 

 relation to irrigation practice, 



515. 

 sampling and composition, 622. 

 studies at Lcffingwell Rancho, 622. 

 studies with prairie subsoils, 514. 

 organism decomposing cellulose, 632. 

 organisms — 



activity as affected by root 



growth, N..T., 28. 

 ammoniflcation test, Ga.. 19. 

 as affected by sulphur and sul- 

 phuric acid, 427. 

 nitrogen-fixing, 125. 

 proteolytic enzyms, 822. 

 relation to toxicity. 624. 

 phosphorus, organic, 213. 

 poisoning, arsenical, 625. 

 potash, solubility in salt solutions, 



126. 

 profile at Buitenzorg, .Tavn. 719. 

 profiles, preparation, 810. 

 protozoa, effect on fertility, 515. 

 reaction as affected by organic matter, 



319. 

 reaction as affected by sodium nitrate, 



323. 

 reactions, chemical, 720. 



Soil — ^Continued, 



reactions, method of stating, 205. 

 solution, acid and alkaline, chemical 



reactions, 720. 

 solution as affected l)y cropping, 420. 

 solution, sampling and analyses, 622. 

 solution, studies, Mich., 512, 630. 

 temperature as affecting root growth. 



134. 

 temperature, relation to solubility. 



Mich., 512. 

 temperature, studies, 422. 

 temiieratiiro survey of United States 



and Canada, 16, 210. 

 volume, effect on plant growth, 813. 

 water. (See Soil moisture.) 

 Soil survey in — 



Arkansas, Faulkner Co., U.S.D.A., 127. 

 Arkansas. Howard Co., U.S.D.A., 317. 

 California, Anaheim area, U.S.D.A., 



127. 

 California, Los Angeles area, U.S.D.A., 



511. 

 California, Middle San Joaquin Valley. 



IT.S.D.A., 211. 

 California, Santa Maria area, U.S.D.A., 



211. 

 Egyptian Delta, 318. 

 Iowa, Buena Vista Co., U.S.D.A.. 620. 

 Iowa, Henry Co.. U.S.D.A., 621. 

 Iowa, Montgomery Co., U.S.D.A., 17. 

 Kentucky, Shelby Co., U.S.D.A., 128. 

 Louisiana, St. Martin Parish, U.S.D.A., 



18. 

 Maryland, Anne Arundel Co., 318. 

 Michigan, Calhoun Co., U.S.D.A., 128. 

 Mississippi, Amite Co., IT.S.D.A., 128. 

 Missouri, Callaway Co., U.S.D.A., 128. 

 New York, Oswego Co., TJ.S.D.A., 129. 

 New York, Saratoga Co., F.S.D.A., 



212. 

 North Carolina, Caldwell Co.. F.S.D.A.. 



419. 

 Ohio, Mahoning Co., IT.S.D.A., 18. 

 I'eniisylvania, Mercer Co., U.S.D.A., 



810. 

 Punjab, 621. 

 Scotland. 797. 



ITnited States in 1914, D.S.D.A., 317. 

 Washington, Benton Co., IT.S.D.A.. 129. 

 West Virginia, Barbour and I^pshur 



Counties, U.S.D.A., 318. 



Soiling crops — 



for dairy cows, 184 ; Iowa. ISl. 

 rotation experiments, 229. 



Soils- 

 abnormality in cylinder exi)erlmeiits. 



423. 

 alkali. (Scp Alkali.) 

 ammonification. {See Ammonifica- 



tion.) 

 and crops, textbook, 96. 

 as affected by Kafir corn and milo 



maize, Kans., 34. 



