u 



AUTHORS INDBX 



Hoiiston, H. A., Estimation of huniun, 



142. 

 Hunt, T. F., Manure and the rotation, 

 616. 

 Nitrogen fertilizer 

 . Hutchinson, H. B., Nitrogen assimila- 

 tion, 495. 

 Organic matter in soil, 188* 

 Partial sterilization of soil, 470. 



Jenkins, E. H., Availability of fertilizers, 

 510. 

 Commercial fertilizers, 564. 

 Jodidi, EL I-., Nitrogen compounds. 138. 

 Johnson, B. W., Availability of fert P 



610. y 



Composition of soil air, 477. 

 Johnston, J., Early drainage in America, 



630. 

 Jones, C. H., Commercial fertilizer, .">f._\ 



Kellerman, K. F., lime, 887. 



Nitro-cultures, 462. 

 Litmus test, 386. 

 Kellev, W. P., Ammonia as plant food, 

 488. 



Magnesium and nitrate*, 888, 

 Kcllner, ( ).. Ammonia as plant-food, 495. 

 Kelly, M. P., Manganese, 530. 

 Kerr, W. C, Composition of mar! 

 Kiesselbach, T. A., Water requirement 

 of corn, 248. 

 ~~f]&\n%, F. H., Absorption and produc- 

 tivity, 368. 



Aspirator, 124. 



Capillary and ground water, 21 I. 



Capillary movement, 225. 



Drainage and soil temperature, 314. 



Drainage and free water, I'M. 



Effect of barometric pressure, 234. 



Effective diameter of soil particles, 

 123. 



Effective surface of soil particles, 

 125. 



Irrigation, 682. 



Land drainage, 627. 



Movement of ground water, 235. 



Pore space in soil, 116, 117. 



Slope and soil temperature, 319. 



Spring plowing, 284. 



Surface tension and temperature, 227. 



Temperature and hygroscopicity, 

 208. 



Water requirement of plants, 247. 



Wind breaks and moisture, 285. 

 Kinnison, C. S., Plasticity, 171. 



Kinsl< \ 



Klippart, .1. EL, I. arid dr 



Knisety, \ I 



Koch, A., Theory as to - 



Konig, .) 



Colloid rliemi-r , . . 1 "> i. 



!..-fT, If. P., Roots and humus, 

 127. 

 Krdfw I r ia in soil, 1 



Fermentation and phosphates, 520. 

 KQmmel. \ K . BoU and n< 

 surveys, 719. 



Lang, C, Radiation 



l.apham, J. E., Classification of soils of 



1'.. 

 l.apham. M If . 01— Ifteathffl of soils 



of United State-. 

 Capillary moven 

 Lawes, J. B , Composition of drainage 



Nitrogen in plant nutrition, 491. 



Leather, •' W., Waier reciuirements of 



plant- 

 LeClerc, J. A., Acid toxicity, 379. 



Liebenberg, R- von, Specific heat of 



soils, 294. 

 l.iebig. J. J. von. Composition of plants, 

 491. 

 Law of minimum, 858* 

 Solvent action of root - 

 Lint, H. C, Sulfur and soil aotd 

 I.ipman, C. B., Bacteria in arid soils, 73. 

 Lipman, J. G., Availability of fertilizers, 

 510. 

 Fermentation of manure, 591. 

 Green manures 818. 

 Loew, ()., Lime and magnesia, 538. 

 I.ohnis, F., Bacteria in soil, 438. 

 Loughridge, R. H., Crop tolerance to 

 alkali, 395. 

 Distribution of irrigation water in 



soil, 704. 

 Hygroscopic water, 204. 

 Soil separates, 102. 

 Lynde, C. J., Capillary movement, 231. 

 Lyon, T. L., Composition of drainage 

 water, 372. 

 Legume cultures, 545. 

 Lysimeter tanks, 241. 



McBride, F. W., Estimation of humus, 



142, 144. 

 McCall, A. G., Solution of soil in situ, 



344. 



