072 ANNUAL REPORTS OF DEPARTMENT OF AGRICULTURE. 



Sudan irrass— Page- 



intrmlucfion and crop vahie 32 



]nvsturo vahio 188, 194 



Sugar — 



by-i'roduct of wlioy llfi 



cro])s. estimates, work 411, 412-41.3 



invostitrations 267-208 



suhst ilutos investigations 267 



Susjars. rare, work of Chemistrv Bureau 268 



Sullys Hill dame Preserve, condition 368-369 



Sulphuring, dried fruits 277 



Sur\eys — 



biological, progress and reports 363-364 



farm business analysis 570 



forest roads, and estimates of cost 512-513 



market . fruits and vegetables 546 



soil, work of Soils Bureau 285-291 



Swans, liabits investigations 358 



Sweet potato — 



crop, 1920, remarks by Secretary 3 



storage houses, plans 527 



sugar content, investigations 267 



weevil eradication and control 318-319 



yam, growing in Florida 185 



Sweet potatoes — 



acreage and production 1914-1920 5, 6 



curing and uses 278 



curing, storage, and diseases 176, 209 



Take-all, disease of wheat 200 



Tanners, assistance by Chemistry Bureau 280 



Tanning, investigations 279-280 



Taylor, n. C, report as Chief of the Office of Farm Management and Farm 



Economics 569-575 



Taylor, Wm. A., report as Chief of the Bureau of Plant industry 159-220 



Tea, Importation Act, administration, transfer to Agriculture Department 578 



Tear-stain, citrus, cause and control 218 



Teclinologists, contributions to outside press 385-386 



Telegraph Service, Weather Bureau, work of stations 74-78 



Telephones — 



cables, injury by lead boring beetles 321, 324 



Weather Bureau, cooperation of Coast Guard Service 75 



Teosinte, crossing with corn 166 



Termites, injuries to buildings, examples and control 321-322, 324 



Testing — 



cotton, staple strength 550 



road materials, methods, standardization , . 29 



Texas — 



border quarantine, work of Horticultural Board 620-623 



pink bollworm control work, review 614-617, 618-619 



"wonder" cure, misbranding, court decision 594 



Thrashers, explosions and fires 281 



Thrips . tobacco, control work 332 



Tick, cattle, eradication work 90, 130-132 



Tile, drainage, investigations 526 



Timber — 



cut, amoimt and value 232-233 



management for insect control 325 



National Forests, sales, use. and reforestation 230-2.34 



sales, on public lands, court decisions 586, 587 



Timbers, treatment for insect control, heat, water, and chemicals 323, 324 



Timothy, breeding, new strains 188 



TNT. War Department surplus, utilization in road building 510 



Tobacco — 



acreage and production, 1914-1920 5,7 



crop of 1920, remarks by Secretary 3 



growing investigations 182-183 



