INDEX 551 



PAGE 



Tying in the strips. The base line 281 



Types, forest, use in estimating. 288 



method of separating areas of different 290 



use in estimating 292 



Uniformity of stand as affecting methods in estimating 265 



Units of measurement for standing timber 139 



Universal standard, choice of a board-foot log rule for 84 



tables, substitution of mill factor for log rules in 146 



volume table 144 



tables and form classes 215 



Unsound defects, deductions from scale for 105 



Unused log rules 85 



Upper diameters, measurement 247 



Use of correction factors for volume 293 



of cubic rules for board feet, errors in 42 



of diagrams for deductions in scaling 106 



of forest types in estimating . 288 



Used length, versus merchantable 178 



Utilization in tops 183 



Valuation survey, forest service standard 282 



Value growth per cent 435 



Vannoy log rule 68 



Variable standards, in constructing log rules 50 



Vermont log rule 35 



Volume, age and area, separation of, in yields 416 



and age of stands, relation 449 



and area for age groups based on diameter groups 422 



for two age groups on basis of average age 419 



and diameter of average trees, determining 338 



correction factors for, in estimating 293 



form as a third factor affecting 196 



growth a basis for site qualities 385 



analysis, utility 332 



for single trees, computation 289 



of trees in 374 



per cent, Pressler's formula 429 



of bark 163 



of standing timber, measurement 226 



of tree, computation 161 



system used in taking measurements 158 



table based on mill factors, Table XXVI 147 



data which should accompany 188 



from frustum form factors, construction of 224 



tables, bark as affecting diameter in 150 



based on actual volumes of trees 147 



on standard tapers per log 144 



board-foot, construction 188 



standard or basis 182 



