EXECUTIVE STAFF John J. Tigert, M.A., LL.D., President of the University' Wilmon Newell, D.Sc., Directors Harold Mowry, M.S.A., Asso. Director L. O. Gratz, Ph.D., Asst. Dir., Research W. M. Fifield, M.S., Asst. Dir., Admin.' J. Francis Cooper, M.S.A., Editors Clyde Beale, A.B.J., Assistant Editors Jefferson Thomas, Assistant Editor' Ida Keeling Cresap, Librarian Ruby Newhall, Administrative Managers K. H. Graham, LL.D., Business Managers Claranelle Alderman, Accountants MAIN STATION, GAINESVILLE AGRONOMY W. E. Stokes, M.S., Agronomist1 Fred H. Hull, Ph.D.. Agronomist G. B. Killinger, Ph.D., Agronomist G. E. Ritchey, M.S., Associates W. A. Carver, Ph.D., Associate Roy E. Blaser, M.S., Associate H. C. Harris, Ph.D., Asso. Agronomist R. W. Bledsoe, Ph.D., Asso. Agronomist Fred A. Clark, B.S., Assistant ANIMAL INDUSTRY A. L. Shealy, D.V.M., An. Industrialist1 ' R. B. Becker, Ph.D., Dairy Husbandman' E. L. Fouts, Ph.D., Dairy Technologists D. A. Sanders, D.V.M., Veterinarian M. W. Emmel, D.V.M., Veterinarians L. E. Swanson, D.V.M., Parasitologist4 N. R. Mehrhof, M.Agr., Poultry Hush.3 G. K. Davis, Ph.D., Animal Nutritionist T. R. Freeman, Ph.D., Asso. in Dairy Mfg. R. S. Glasscock. Ph.D., Asso. An. Hush. C. L. Comar, Ph.D., Asso. Biochemist D. J. Smith, B.S.A., Asst. An. Husb.' P. T. Dix Arnold, M.S.A., Asst. Dairy Husb.s L. E. Mull, M.S., Asst. in Dairy Tech.' 0. K. Moore, M.S., Asst. Poultry Hush.3 J. E. Pace, B.S., Asst. An. Husb.3 S. P. Marshall, M.S., Asst. in An. Nutr. C. B. Reeves, B.S., Asst. Dairy Tech. ECONOMICS, AGRICULTURAL C. V. Noble, Ph.D., Agr. Economist1 Zach Savage, M.S.A., Associate A. H. Spurlock, M.S.A., Associate Max E. Brunk, M.S., Assistant ECONOMICS, HOME Ouida D. Abbott, Ph.D., Home Econ.1 Ruth O. Townsend. R.N., Assistant R. B. French, Ph.D., Biochemist ENTOMOLOGY J. R. Watson, A.M., Entomologist1 A. N. Tissot, Ph.D., Associates H. E. Bratley, M.S.A., Assistant HORTICULTURE G. H. Blackmon, M.S.A., Horticulturist1 A. L. Stahl, Ph.D., Associate F. S. Jamison, Ph.D., Truck Hort. Byron E. Janes. Ph.D.. Asst. Hort. R. J. Wilmot, M,S.A., Asst. Hort. R. D. Dickey, M.S.A., Asst. Hort.' J. Carlton Cain, B.S.A., Asst. Hort.' Victor F. Nettles, M.S.A., Asso. Hort.4 A. L. Kenworthy, M.S., Asst. Hort.2 F. S. Lagasse, Ph.D., Asso. Hort.2 II. M. Sell, Ph.D., Asso. Hort.2 PLANT PATHOLOGY W. B. Tisdale, Ph.D., Plant Pathologist' Phares Decker, Ph.D., Asso. Plant Pathologist Erdman West, M.S., Mycologist Lillian E. Arnold, M.S., Asst. Botanist SOILS R. V. Allison, Ph.D., Chemist'1 Gaylord M. Volk, M.S., Chemist F. B. Smith, Ph.D., Microbiologist3 C. E. Bell, Ph.D., Associate Chemist L. E. Ensminger, Ph.D., Soils Chem. J. R. Henderson, M.S.A., Soil Technologist L. H. Rogers, Ph.D., Asso. Biochemist' R. A. Carrigan, B.S., Asso. Biochemist' J. N. Howard, B.S., Asst. Chemist T. C. Erwin, Assistant Chemist H. W. Winsor, B.S.A., Assistant Chemist Gee. D. Thornton, M.S., Asst. Microbiologists R. E. Caldwell, M.S.A., Asst. Soil Surveyor4 Olaf C. Olson, B.S., Asst. Soil Surveyor4 BOARD OF CONTROL H. P. Adair, Chairman, Jacksonville R. H. Gore, Fort Lauderdale N. B. Jordan, Quincy T. T. Scott, Live Oak Thos. W. Bryant, Lakeland J. T. Diamond, Secretary, Tallasassee BRANCH STATIONS NORTH FLORIDA STATION, QUINCY J. D. Warner, M.S., Agronomist in Charge R. R. Kincaid, Ph.D., Plant Pathologist V. E. Whitehurst, Jr., B.S.A., Asst. An. Hush.4 W. C. McCormick, B.S.A., Asst. An. Hush. Jesse Reeves, Asst. Agron., Tobacco W. H. Chapman, M.S., Asst. Agron.' Mobile Unit, Monticello R. W. Wallace, B.S., Asso. Agronomist Mobile Unit, Milton Ralph L. Smith, M.S., Asso. Agronomist CITRUS STATION, LAKE ALFRED A. F. Camp, Ph.D., Horticulturist in Charge V. C. Jamison, Ph.D., Soils Chemist B. R. Fudge, Ph.D., Associate Chemist W. L. Thompson, B.S., Entomologist C. R. Stearns, Jr., B.S.A., Chemist W. W. Lawless, B.S., Asst. Horticulturist' R. K. Voorhees, Ph.D., Asso. Plant Path. H. O. Sterling, B.S., Asst. Hort. T. W. Young, Ph.D., Asso. Horticulturist J. W. Sites, M.S.A., Asso. Horticulturist EVERGLADES STA., BELLE GLADE J. R. Neller, Ph.D.. BineBhemit in Charge J. W. Wilson, Sc.D., Entomologist4 F. D. Stevens, .., buii L,.e Agron. Thomas Bregger, Ph.D., Sugarcane Physiologist G. R. Townsend, Ph.D., Plant Pathologist R. W. Kidder, M.S.. Asst. An. Husb. W. T. Forsee, Jr., Ph.D., Asso. Chemist B. S. Clayton, B.S.C.E., Drainage Eng.' F. S. Andrews, Ph.D., Asso. Truck Hort.4 Roy A. Bair, Ph.D., Asst. Agron. E. C. Minnum, M.S., Asst. Truck Hort. N. C. Hayslip, B.S.A., Asst. Entomologist SUB-TROPICAL STA., HOMESTEAD Geo. D. Ruehle, Ph.D., Plant Path. In Charge S. J. Lynch, B.S.A., Asso. Horticulturist W. CENT. FLA. STA.. BROOKSVILLB Clement D. Gordon, Ph.D., Asso. Poultry Geneticist in Charge2 RANGE CATTLE STA., ONA W. G. Kirk, Ph.D., An. Husb. in Charge E. M. Hodges. Ph.D., Asso. Agron., Wauchula Gilbert A. Tucker, B.S.A., Asst. An. Husb.' FIELD STATIONS Leesburg M. N. Walker, Ph.D., Plant Path. in Charges E. M. Andersen, Ph.D., Associate Horticul- turist Acting in Charge Plant City A. N. Brooks, Ph.D., Plant Pathologist Hastings A. H. Eddins, Ph.D.. Plant Pathologist E. N. McCubbin, Ph.D., Truck Horticulturist Monticello S. 0. Hill, B.S., Asst. Entomologists 4 A. M. Phillips, B.S., Asst. Entomologist' Bradenton J. R. Beckenbach, Ph.D., Horticulturist in Charge E. G. Kelsheimer, Ph.D., Entomologist F. T. McLean, Ph.D., Horticulturist A. L. Harrison, Ph.D., Plant Pathologist David G. Kelbert, Asst. Plant Pathologist Sanford R. W. Ruprecht, Ph.D., Chemist in Charge J. C. Russell, M.S., Asst. Entomologist Lakeland E. S. Ellison, Meteorologist2 5 Harry Armstrong, Meteorologist2 SHead of Department. 2 In cooperation with U. S. 3 Cooperative, other divisions, U. of F. In Military Service. 5 On leave. Sift of Ianiiii offit