INDEX. 19 



Bulletin No. Page. 



Steam-rust, wheat, epidemics, note ._ 1046 4 



Btilpnotia salicis, host of gipsy-moth parasite 1028 12-13 



Stipa comata, occurrence in South Dakota 1039 4 



Stores, self-service, types 1044 2-4 



Sulphur dust, spray for avocado red spider, experiment 1035 11-13 



Sunflower — 



rust-resistant, breeding work in Russia 1045 30 



silaffe — 



crop, bulletin by H. N.Vinall 1045 1-32 



feed value, palatability, color, odor, acidity, etc 1045 19-29 



varieties, description of seed, yields, etc 1045 7-9 



Sunflowers — 



composition at various stages of growth 1045 14 



cutting, time and methods 1045 13-15 



growing — 



for silage 1045 9-15 



in United States, tests and experiments 1045 2-9 



insect enemies 1045 31 



resistance to frost 1045 5 



seeding, date, method, and rate 1045 10-11 



soiling crop 1045 29 



value in semiarid regions 1045 5-7 



Susquehanna Flats, public hunting grounds, regulations 1049 29-30 



Sweet potato — 



food value and uses 1041 1-3 



growth habits, food value, economic importance, etc 1041 1-3 



Sweet potatoes — ■ 

 canned — 



consistency of varieties 1041 16-23 



pack of 1920 ._ 1041 1 



canning quality of different varieties, study, bulletin by C. A. 



Magoon and C. W. Culpepper 1041 1-34 



chemical composition ; 1041 3-6 



discoloration in canning 1041 15-16 



Swietenia spp. See Mahogany. 



Tabebuia donnell-smithii, identification key and description 1050 4, 16 



Tanguile, species, occurrence, etc 1050 11-12 



Tar- 

 coal — 



production, apparatus used, and description 1036 11-16 



production in 1904-1917 1036 18 



coke-oven, production, 1909 1036 23 



gas-house, production, 1908. 1036 23 



use as creosote diluent, properties, value, etc 1036 79-83 



water-gas — 



production 1036 18, 23 



source and production method 1036 16-18 



use with zinc chloride, specifications 1036 104-105 



Tars- 

 coal, sources and nature 1036 4-5 



coke-oven, specific gravity and carbon content 1036 23-25 



composition and manufacture 1036 7-18 



distillation, apparatus and methods 1036 27-34 



oil, sources and nature 1036 5-6 



Tea-seed oil, digestibility, experiments 1033 6-7 



Tenures, farm lands, southern Georgia, comparison of white and 



colored operators 1034 8-97 



Tetranychus yothersi. See Spider, red, on avocado. 



Thievery, danger in self-service stores, losses and preventive! -\r\AA'f 11-13, 



measures / '^'^ I 31-33 



Thrips— 



black, enemy of avocado red spider 1035 10 



six-spotted, enemy of avocado red spider 1035 9 



Tillage, preparation of irrigated land for spring grains 1039 69-70 



