AUTHORS' INDEX 



Adams, G. E., Salt as fertilizer, 544. 

 Ageton, C. U., Lime and magnesium, 



538. 

 Aikman, C. M., Composition of manure, 



595. 



Production of manure, 597. 

 Alway, F. G., Composition of humus, 



148. 

 Ames, J. W., Lime in soil, 378. 



Soil investigation, 69, 70. 

 Ammon, G., Hygroscopicity, 203. 

 Appiani, G., Silt cylinder, 91. 

 Ashley, H. E., Colloidal clay, 161. 

 Estimation of colloids, 167. 

 Plasticity, 172. 

 Atkinson, A., Storage of moisture in 



soil, 715. 



Atterberg, A., Classification of soil par- 

 ticles, 96. 



Cohesion test, 176. 

 Measurement of cohesion, 181. 

 Mechanische Bodenanalyse, 84. 

 Plasticity, 171. 

 Silt cylinder, 91. 



Baker, M. N., Sewage irrigation, 711. 



Bancroft, W. D., Colloidal chemistry, 

 153. 



Barakov, F., Carbon dioxide in soil, 409. 



Baumann, A., Composition of humus, 

 133. 



Beal, W. H., Absorptive capacity of 



litter, 603. 

 Handling manure, 602. 



Bennett, H. H., Classification of soils 

 in U. S., 724. 



Bertrand, G., Manganese, 531. 



Biltz, W., Soil solution, 345. 



Bizzell, J. A., Composition of drainage 



water, 372. 

 Legume cultures, 545. 



Blanck, E., Law of minimum, 554. 



Bolly, H. I , I )i i -use-producing organ- 

 ism, 42G. 



Boullanger, E., Sulfur, 524. 



Boussingault, J. B., Snow and tempera- 

 ture, 306. 

 Bouyoucos, G. J., Bibliography of soil 



heat, 289. 



Manure and soil temperature, 316. 

 Radiation, 302, 304. 

 Soil temperature, 301. 

 Specific heat of soil, 295. 

 Texture and conductivity, 309, 312. 

 Bowie, A., Practical irrigation, 682. 

 Breazeale, J. F., Acid toxicity, 379. 



Estimation of organic matter, 143. 

 Brenchley, W. E., Soil solution and 



plant growth, 347. 

 Briggs, L. J., Analysis of soil, 143. 

 Capillary movement, 225. 

 Classification of particles, 96. 

 Hygroscopic and capillary water, 



208. 



Hygroscopic moisture, 206. 

 Mechanical soil analysis, 84. 

 Moisture equivalent, 220. 

 Soil solution in situ, 343. 

 Water requirements of plants, 245, 



712. 



Wilting point, 258. 



Britton, W. E., Availability of ferti- 

 lizers, 510. 

 Bronet, G., Penetration of fertilizers, 



354. 

 Brown, B. E., Carbonized materials, 141, 



144. 



Fertilizers and acidity, 381. 

 Brown, C. F., Alkali land reclamation, 



399. 



Brown, C. W., Bacteria in soil, 439. 

 Brown, P. E., Bacteria in soil, 432. 

 Bryan, H., Soil analysis, 93. 

 Buckingham, E., Capillary movement, 



232. 



Capillary water, 217. 

 Diffusion of gases in soil, 483. 

 Movement of water vapor in soil, 



241. 

 Natural mulching, 277. 



741 



