544 INDEX 



PAGE 



Principles underlying the estimation of standing timber 255 



the study of growth 315 



Prismoidal formula 21 



Products, forms of, into which the contents of trees are converted 11 



made from bolts and billets 14 



volume tables for two or more, combination 193 



Projection of growth by diameter classes 361 



Purpose and character of growth studies 315 



and derivation of tables for cubic volume of trees 177 



Purposes of study of height growth 365 



Qualities of site, separation in field 448 . 



volume growth a basis for 385 



Quality, growth per cent 435 



of site 384 



as affecting height growth 366 



effect on diameter growth 352 



of standing timber, estimating 297 



Quarter girth • 25 



or Hoppus log rule 34 



section, definition 6 



Quebec log rule 76 



Record of data on plots, yield tables 400 



of timber 276 



Records, scale 98 



Reduced growth of stands after cutting 439 



Reduction in diameter, in scaling defective logs 105 



in length, in scaling defective logs 105 



Reisig method, xylometric, for cordwood 132 



Relation between cubic measure and true board-foot log rules 39 



current and mean annual growth 316 



plots and area covered, Table XLIII 286 



size of area units and per cent of area to be estimated 262 



of cubic and board-foot contents of 16-foot logs, Table III 41 



of diameter of log to per cent of utilization in sawed lumber 40 



Relations of height growth and diameter growth 367 



Relative diameter, in determining growth per cent 430 



utility of different classes of growth data 327 



Re-manufactured lumber, grades ' 456 



Re-plotting curves, strip method 173 



Resistance to wind pressure as the determining factor of tree form 208 



Retracing boundaries 267 



Right triangles, in measuring heights 238 



Ring shake 109 



Riniker's absolute form factor 212 



Ropp's log rule 86 



Rot, butt 110 



center 108 



entering from knots 112 



