INDEX. 15 



Speare, a. T., bulletin on ''Natural control of the citrus mealy- BuUetin No. Page, 



bug in Florida " 1117 1-19 



Spraying — 



citrus for scab, experiments and directions 1118 27-34 



citrus scab control, schedules, sprays, etc 1118 29-34 



Sprays, materials, and schedules for citrus scab control 1118 29-34 



Spruce — 



lumber production, by States, 1920 1119 47 



species, adaptability for shelter-belt planting 1113 10, 14, 15 



"Square" method, use in proportioning milk ingredients in ice 



cream 1123 6 



Squirrels, enemies of pine seedlings 1105 135 



Stackburn, rice— 



and seedling blight, control bv hot -water treatment, bulletin 



by W. H.'Tisdale .' 1116 1-11 



occurrence, nature and control 1116 2-10 



Statistics, lumber, production and value 1119 24-62 



Stilpnotia salicis, distribution and outbreak in 1921 1103 46-48 



Stinkbug, southern, cause of kernel spot of pecan 1102 5-14, 15 



Storage — 



calcium arsenate, effect on chemical composition, bulletin by 



G. C. McDonnell, C. M. Smith, and B. R. Coad 1115 1-28 



relation to internal browning of apples 1104 8-12 



wheat feeds, in summer, charges, etc 1124 7-9 



Sweet potato, weevil, outbreaks in 1921 1103 34-37 



S ycamore, lumber production, by States, 1920 1119 54 



Tafilet date, value, description, and origin 1125 2 



Tallow, use in protection of telephone cables 1107< XA 'Xq "a-! 



Tangelo — 



inoculation with citrus scab, results 1118 25 



susceptibility to citrus scab 1118 3 



Tangerine, inoculation with citrus scab, results 1118 24-26 



Taxes, income, liability of corporations 1106 53-54 



Telephones, injury to apparatus by boring insects 1107 2-9 



Tennessee — 



bean beetle, outbreak in 1921 1103 33 



lumber cut, 1920, 1870-1920, value and kinds lligj ^^' ^i^T^A' 



' l_ 4o-59 



Texas — 



lumber cut, 1920, 1870-1920, value and kinds '1II9J ^^' ^^^^qI 



pink boll worm, outbreaks in 1921 1103 43-44 



sweet-potato weevil, outbreaks in 1921 1103 35 



Timber — 



growing, necessity of 1119 21-23 



injury by mistletoe 1112 25 



pine, injury by mistletoe 1112 25, 35 



Tip moths, enemy of pine seedlings 1105 3, 134 



TisDALE, W. H., bulletin on Rice, " Seedling blight and stackburn 



of rice and the hot-water seed treatment" " 1116 1-11 



Toxoptera graminum, outbreaks in 1921 1103 15-18 



Trade- 

 Commission, Federal, purpose and powers 1106 46-48 



restraint, laws, concerning 1106 35-46 



rules, handling and sales of feeds, definitions, etc 1124 9-11 



Trees — 



adaptation to soil conditions on Northern Great Plains 1113 14-15 



planting for shelter belt in Northern Great Plains 1113 2-28 



shipments to shelter-belt planters in Northern Great Plains. . 1113 18-20 

 species adaptable to shelter belts for Northern Great Plains, 



notes 1113 6-14 



_ supply for shelter belts by Department, 1916-1920 1113 18-24 



Trice cotton, origin and value 1111 35 



Triumph cotton, origin and value 1111 19, 35 



Tuberculosis, resistance of guinea pigs 1121 32-33 



Tupelo, lumber production, by States, 1920 1119 51 



Tusayan National Forest, pine reproduction, studies 1105 3-141 



