INDEX 549 



PAGE 



Superficial contents of lumber, correction of log rule for 83 



of sawed lumber '. 13 



estimates 308 



Suppressed tree, definition 158 



Suppression, age as affected by 341 



as affecting height growth 366 



Surface checks 115 



defects 115 



Survey, forest, as distinguished from timber estimating 268 



definition 5 



Surveying, forest, as a part of the forest survey '. 270 



relation to mensuration 5 



Sweep in scaling .' 116 



waste from 51 



System for timber estimating, choice of 261 



Systems of measurement used in forest mensuration 6 



of strip estimating in use 282 



used in taking measurements of the tree for volume 158 



Tally sheets 277 



unit of measurement, definition 6 



Tape, diameter 229 



Taper as a factor in limiting the scaling length of logs for board-foot contents. . 43 



definition 18 



introduction into log rules 44 



tables : 196 



definition and purpose 197 



limitations of 204 



method of constructing 197 



substitution for tree analysis 382 



Tapers, standard, as basis of volume tables , 144 



substitution for volume growth 379 



Tatarian log rule 36 



Technique of measuring heights 245 



Tennessee River log rule 35 



Texas, Doyle rule, over-run 71 



Third and Fifth log rule 35 



Thomas' Accurate log rule 66 



Thurber log rule 6S 



Tiemann log rule 67 



Table LXXXIV 500 



comparison with Blodgett rule 42 



reduced to small end diameters, Table LXXXV 502 



Timber appraisal as distinguished from forest survey 269 



cruisers, training 303 



estimates, accuracy, methods of improving 288 



estimating 9 



choice of system for 261 



of units in 140 



definition 2 



