INDEX. 



Page. 



Abortion, infectious of cattle, studies 136-137, 154 



Acala cotton, value, growing in Oklahoma ^ 162 



Accounting, cost, cooperative studies and records 570-571 



Accounts Division, report of Chief, 1920 379-381 



Acid — 



phosphoric investigations 296-298 



propionic use 116 



Acts of Congress. See Congress. 



Adams Act, response by States 454 



Addressing, work of Publications Division 403-404 



Adhesives, corn-cob, studies 282 



Adulteration — 



anise seed ., 260 



drugs 266 



foods 265,267 



insecticides 276, 608, 610 



mineral waters 265-266 



Aerology, investigations and cooperative work of Weather Bureau 79-80 



Aeroplanes — 



fij-ing weather forecasts by Weather Bureau 68 



study by "Weather Bureau 67, 80 



Agents, county — 



increase in number 36-37 



utilization as crop reporters, limitations 420-421 



work in — 



beef cattle extension 97-98 



South, North, and West 466-469, 476-479 



Agricultural — 



agencies, need of funds and trained employees 61 



conditions, world, study for benefit of farmers 13-14 



experiment stations — 



importance and needs 39 



See also Experiment stations. 



extension, work under Smith-Lever Act of 1914 36-38 



history, research 573 



meteorology, work of Weather Bureau 84-85 



Agriculture — 



Department- 

 exhibits at fairs and expositions 393-396 



need of new buildings, recommendations , 57-58 



enemies, diseases, insects, and animals, control 27-31 



geography, research 573 



International Institute — 



acti\'ities, salary of delegate 16 



crop reports sent and received 409, 410 



losses caused by mosquitoes .- • • ; '^66 



scientific and technical papers of Department workers, outside publication . 385-386 

 secretary, report for 1920 3-60 



Alabama — 



Muscle Shoals nitrogen — 



fixation plant, needs 40 



plant 294, 300 



Alaska — 



development, relations of Department 48-49 



experiment stations, work 456, 457-459 



641 



