. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BB8BS UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 835 Contribution from the Bureau of Public Roads THOMAS H. MACDONALD, Chief Washington, D. C. PROFESSIONAL PAPER August 6, 1920 CAPILLARY MOVEMENT OF SOIL MOISTURE By WALTER W. McLAUGHLIN, Senior Irrigation Engineer CONTENTS Page Object 2 Plan of Experiments 2 Hate and Extent of Movement of Soil Moisture by Capillarity 13 Effect of Gravity on the Movement of Soil Moisture by Capillarity .... 39 Evaluation of Empirical Curves , . , 47 Open Versus Covered Flumes
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BB8BS UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 835 Contribution from the Bureau of Public Roads THOMAS H. MACDONALD, Chief Washington, D. C. PROFESSIONAL PAPER August 6, 1920 CAPILLARY MOVEMENT OF SOIL MOISTURE By WALTER W. McLAUGHLIN, Senior Irrigation Engineer CONTENTS Page Object 2 Plan of Experiments 2 Hate and Extent of Movement of Soil Moisture by Capillarity 13 Effect of Gravity on the Movement of Soil Moisture by Capillarity .... 39 Evaluation of Empirical Curves , . , 47 Open Versus Covered Flumes .... 54 Effect of Temperature on Soil-Moisture Conditions 56 The Capillary Siphon 58 Capillary Movement of Moisture From a Wet to a Dry Soil 63 References 69. WASHINGTON GOVERNMENT PRmiTNG OFFICE 1920. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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