534 INDEX 



PAGE 



Formula, Newton's 21 



prismoidal 21 



Schiffel's, derivation 206 



use in computing volume of tree 163 



Smalian's 20-21 



Formulae, general, for all log rules 77 



in construction of log rules 58 



waste from saw kerf'. 53 



Forties, unit of estimating 263 



Forty, definition 6 



Forty-five log rule 85 



Frost cracks 112 



Frustum, basis of determining dimensions of, in frustum form factors 219 



form factor, principle of. 278 



true, calculation of the 221 



factors, character and utility 219 



construction of volume table from 224 



for merchantable contents in board-feet 218 



Frustums 20 



volume, calculation 221 



Full and scant thicknesses of boards as affecting over-run 49 



General formula? for all log rules 77 



Girth as a substitute for diameter in log measurements 24 



Glens Falls standard 28 



Goble log rule 33 



Graded log rules 78 



applied to the log, in estimating 299 



tables 195 



volume tables 193 



applied to tree in estimating 299 



Grades, finishing 457 



of lumber 455 



and log grades 103 



in estimating, method based on sample plots and log tables . 300 



in standing timber 298 



relation to cull in log scaling 458 



log 103 



Grading rules, Southern yellow pine 457 



Graduation of Biltmore stick, Table XXXIX 233 



Graphic method, application in constructing volume tables 169 



of determining diameter growth 347 



plotting of data; its advantages 166 



Graves, H. S. Method of stem analysis 382 



Ground rot 110 



Group form of age classes, separation of areas 418 



Growth and yields, density of stocking as affecting 392 



by diameter classes, projection 361 



correlation of stump with D.B.H 269 



current annual 315 



