

authors' index 



745 



McCaughey, W. J., Color of soil, 77. 



Soil-forming minerals, 100. 

 MacDonald, W., Dry-farming, 712. 

 McLane, J. W., Moisture equivalent, 

 220. 



Soil solution in situ, 343. 

 McLaughlin, W. W., Capillary move- 

 ment, 224. 



Movement of irrigation water, 704. 

 Marbut, C. F., Classification of soils of 

 United States, 718, 724. 



Soils of United States, 34. 

 Marchal, E., Ammonification, 447. 

 Mares, M. N., Sulfur, 525. 

 -Mayer, A., Optimum moisture, 263. 

 Mayo, U. S., Bacteria in soil, 432. 

 Maze, P., Law of minimum, 554. 

 Mead, E., Extent of irrigation, 685. 



Irrigation institutions, 682. 



Legal status of irrigation, 691. 



Lining for canals, 694. 



Preparation for irrigation, 682. 

 Mellen, C. R., Drainage of Johnston 



farm, 630. 

 Merrill, G. P., Color of soil, 77. 



Residual clay, granite, 27. 



Pock weathering, 13, 26, 62. 



Weathering of gneiss, 66. 



Zeolitis, 357. 

 Merrill, L. A., Irrigation of crops, 682. 

 Merzbacher, G., Origin of loess, 60. 

 Miles, M., Drainage in Europe, 629. 

 Miller, N. H. J., Nitrogen assimilation, 

 495. 



Organic matter in soil, 136. 

 Miner, H. L., Commercial fertilizers, 562. 

 Mitscherlich, A. E., Estimation of 

 colloids, 168. 



ir.vgroscopicity, 208. 



Law of Minimum, 553. 



Water and plant growth, 253. 

 Molisch, H., Enzymes of roots, 407. 

 Montemartini, L., Catalysis, 530. 

 Montgomery, E. G., Water require- 

 ments, 245, 248, 249. 



Water requirement of corn, 251. 

 Mooers, G. A., Soil survey of Tennessee, 



719. 

 Mulder, T. J., Organic matter of soil, 131. 

 Miiller, R., Solubility of minerals, 24. 



Newell, F. H., Irrigation, 682. 

 Niklas, H., Colloid chemistry, 153. 

 Norton, J. H., Composition of surface 



water, 373. 

 Noyes, A. A., Properties of colloids, 153. 



Oberlin, C, Soil antiseptics, 465. 

 Olin, W. H., American irrigation, 682. 

 Osborne, T. B., Beaker method of 

 mechanical analysis, 96. 

 Classification of soil particles, 90. 



Paddock, W., Irrigation of fruit, 682. 

 Pagnoul, M., Effects of carbon bisul- 

 fide, 466. 

 Parks, J., Drainage and soil tempera- 

 ture, 314. 

 Patten, A. J., Bacteria in soil, 439. 

 Patten, H. E., Absorption of gases, 367. 

 Absorption by soils, 351. 

 Heat of condensation, 209. 

 Heat transfer, 309, 313. 

 Specific heat of soil, 295. 

 Temperature and hygroscopicity, 

 208. 

 Patterson, H. J., Lime, 541. 

 Peake, W. A., Estimation of organic 



matter, 143. 

 Pember, F.- R., Fermentation and phos- 

 phates, 520. 

 Penny, C. L., Clover as green manure, 

 621. 

 Green manures, 619. 

 Penrose, R. A. F., Composition of resid- 

 ual soil, 33. 

 Peters, E., Absorbed bases, 354. 



Absorption of potassium, 350. 

 Peterson, W. H., Sulphur as fertilizer, 



526. 

 Petit, A., Temperature of soil, 300. 

 Pettit, J. H., Soil survey of Illinois, 



719. 

 Pfaundler, L., Specific heat of soil, 294. 

 Pfeiffer, T., Effect of soil antiseptics, 470. 

 Law of minimum, 554. 

 Carbon dioxide as soil solvent, 409. 

 Pick, H., Estimation of colloids, 168. 

 Pickel, G. M., Composition of muck. 



37. 

 Piper, C. V., Green manures, 619. 

 Pitra, J., Bacteria in soil, 437. 



Fermentation and phosphates, 520. 

 Plummer, J. K., Acid materials, 376. 

 Potts, E., Texture and conductivity, 309. 

 Pranke, E. J., Cyanamid, 503. 

 Prianischnikov, D., Availability of phos- 

 phorus, 518, 521, 535. 

 Puchner, H., Cohesion test, 176. 



Composition of soil separates, 102. 

 Measurement of cohesion, 178. 

 Pugh, E., Nitrogen in plant nutrition. 

 491. 



