_Secretary of Agriculture_ Henry A. Wallace. _Undersecretary_ M. L. Wilson. _Assistant Secretary_ Harry L. Brown. Coordinator of Land Use Planning and M. S. Eisenhower. Director of Information. _Director of Extension Work_ C. W. Warburton. _Director of Finance_ W. A. Jump. _Director of Personnel_ Roy F. Hendrickson. _Director of Research_ James T. Jardine. _Solicitor_ Mastin G. White. _Agricultural Adjustment H. R. Tolley, _Administrator_. Administration_ _Bureau of Agricultural Economics_ A. G. Black, _Chief_. _Bureau of Agricultural Engineering_ S. H. McCrory, _Chief_. _Bureau of Animal Industry_ John R. Mohler, _Chief_. _Bureau of Biological Survey_ Ira N. Gabrielson, _Chief_. _Bureau of Chemistry and Soils_ Henry G. Knight, _Chief_. _Commodity Exchange Administration_ J. W. T. Duvel, _Chief_. _Bureau of Dairy Industry_ O. E. Reed, _Chief_. _Bureau of Entomology and Plant Lee A. Strong, _Chief_. Quarantine_ _Office of Experiment Stations_ James T. Jardine, _Chief_. _Farm Security Administration_ W. W. Alexander, _Administrator_. _Food and Drug Administration_ Walter G. Campbell, _Chief_. _Forest Service_ Ferdinand A. Silcox, _Chief_. _Bureau of Home Economics_ Louise Stanley, _Chief_. _Library_ Claribel R. Barnett, _Librarian_. _Bureau of Plant Industry_ E. C. Auchter, _Chief_. _Bureau of Public Roads_ Thomas H. MacDonald, _Chief_. _Soil Conservation Service_ H. H. Bennett, _Chief_. _Weather Bureau_ Francis W. Reichelderfer, _Chief_. U. S. GOVERNMENT PRINTING OFFICE: 1939 For sale by the Superintendent of Documents, Washington, D. C. Price 5 cents * * * * * Transcriber Note Illustrations were moved to avoid splitting paragraphs. Display of numbers was standardized in the tables to show leading zeros.