16 DEPARTMENT OF AGRICULTURE BULS. 1051-1075. 



Turpentine — Continued . 



production — Bulletin No. 



annual average 1061 22 



decrease, 1906-1921 1061 24,36 



from second -growth longleaf pine 1061 22-25 



Turpentining — 



data of equivalents, values, etc 1061 32-34 



effect on timber 1061 33-34 



experiments, yields, etc . 1064 27-31 



Florida National Forest, agreement between Forest Service 



and operators 1061 " 30-32 



practices, gum yields, profits, etc 1061 25, 30 



f 25 33 41 



size of timber, lease specifications, etc 1064< ' ' .X 



suggestions for — 



practice 1064 33-38 



research and experiments 1064 38;-40 



systems and suggestions 1061 26-27 



Twigs, cut, use in transpiration studies 1059 165 



Utah, wheat acreage and varieties 1074 215-216 



Vanes, wind, use in forest, and cost of installation 1059 147-151 



Vapor — 



movement in soils studies 10594 -, o 7 _i on 



pressure tables 1059 175-197 



Vegetation, forest, environmental conditions, measurement 1059 11-168 



Vermont, wheat acreage and varieties 1074 216 



Virginia — 



red cedar. See Cedar. 



wheat acreage and varieties. 1074 216 



Viscogen, preparation and use in whipping cream 1075 18-19 



Vosbury, Margaret Connor, bulletin on "Methods of manu- 

 facturing potato chips " 1055 20 



Walnut- 

 black, curculio, description, life history, enemies, and con- 

 trol .'. 1066 7-11, 16 



Japanese, injury by butternut curculio 1066 2,3,4 



Persian, injury by butternut curculio 1066 2, 3 



Washington — 



Olympic peninsula, forest destruction by hurricane, 1921.. 1060 22 



pear growing, location and quality of fruit 1072 3, 7, 8, 9 



Sitka spruce — 



stand, 1918, and cut, 1915-1918 1060 4,5 



volume tables. 1060 33-37 



wheat acreage and varieties 1074 216 



Waste lands, Southern, area suitable for long-leaf pine production . . 1061 1, 2, 50 



Water, absorption by plants, relation to osmotic pressure 1059 66-70, 120 



Weather Bureau, climatic studies, value to forest investigators.. 1059 11-12 

 Weight, bushel of grain, testing apparatus, bulletin by E. G. 



Boerner and E. H. Ropes . . . . . 1065 1-13 



' ' Weigh t-per-bushel tester, ' ' for grain, description 1065 1-4 



Wells, soil, use in determining soil moisture 1059 73-79, 136 



West Virginia, wheat acreage and varieties 1074 216 



Wet lands, drainage pumps, tests, bulletin by W. B. Gregory 1067 1-54 



Wheat- 

 acreage of different varieties, by States 1074 207-218 



American — 



j r 7_9 



classifications, and literature citations 1074< 219-230 



varieties, classification, bulletin by J. Allen Clark, John 



H. Martin, and Carleton R. Ball. 1074 1-238 



characters, morphological and physiological 1074 23-48 



