518 INDEX. 



Soil— • Page. 



indicatora, value of natural vegetation 159 



survey, work, 1918, review 225-228 



surveys, cooperation with States 225 



Soils Bureau, report of Chief, 1918 225-232 



Solar radiation, investigations 68 



Solicitor, report, 1918 393^24 



Sorghums, grain, area and production, increase, 1918 147 



South Dakota, Wind Cave National Game Preserve, conditions, 1918 268-269 



Southern States^ 



farm management demonstrations 499 



live-stock extension work 80-82 



Soy beans — 



composition, studies 217 



improved varieties 140-141 



Specialists, extension work in agriculture and home economics 357, 367-369 



Spewing sickness, sheep, cause 118 



Spruce, use in aircraft 180, 194-195 



Squirrels, ground — 



control work, 1918 13 



eradication work, 1918 260-261 



Sugar, beet, industry, conditions, 1918 147-148 



Sugars, study, Chemistry Division 219 



Supplies, Army, examination, work of Chemistry Bureau 212 



Surveys — 



drainage of farm lands, 1918 389 



fertilizer, work of Markets Bureau 455-456 



food, work of Markets Bureau 455 



soil, cooperation with States, and work, 1918 225-232 



Standards- 

 cotton — 



investigations and demonstrations 469^70 



preparation and distribution 483_484 



grain, law enforcement, 1918 24-25 



Starch, recovery from injured potatoes 152 



Starling, food habits, study 264 



States Relations Service, report of Director, 1918 335-371 



Statistics — 



crops and live stock, 1914-1918 7-8 



library, circulation, numbers of books, finances, etc 3, 10-16 



publication work, 1918 287-288 



Sterilizers, steam, for dairy use, demonstration work 93-94 



Stocks, fruit-tree, investigations 152 



Stockyards — 



regulation, work of Markets Bureau : 452-453, 487 



supervision and regulation 50 



Storage — ■ 



emergency, work of Markets Bureau 480 



foodstuffs, investigations 469 



fruit, investigations 151-152 



grain, investigations 471 



houses, construction improvement 464 



sweet-potato, experiments 150-151 



Storm, tropical, September, 1917, and weathor warnings 60 



Storms, warnings, work of Weather Bureau, 1 9 ' 8 60 



Straw, flax, utilization for pap?r making 151 



Swans, damage to duck-feeding grounds 264 



Sweet potato — • 



quarantine, revision , 444 



scarabee, cause of quarantine 444 



weevil, eradication and control 241 



Sweet potatoes — 



acreage and production, 1914-1918 7 



storage experiments 150-151 



Tanning — 



materials, forest supply, investigations and work 198 



studies, Chemistry Bureau 215-216 



