546 INDEX 



PAGE 



Schneider's formula for growth per cent on standing trees 431 



Scribner decimal log rule 73 



C log rule, Table LXXXVI 504 



Scribner log rule 73 



decimal values, Table XII 74 



erroneously termed 68 



extension 74 



Scribner-Doyle log rule 77 



Scribner's log and lumber book 68 



Seams 112 



pitch 112 



Seasoning, effect on volume of stacked wood 123 



Second growth hardwoods, yield table, Central New England, Table LXII 409 



Section, definition, area unit 6 



Sections, measurement of diameter growth on 342 



Sectors, deduction by, for defects 115 



Seedling, age of 336 



Seedlings, height, western yellow pine, Table L 336 



Selection of trees for measurement in constructing volume tables 154 



* Separation of factors of volume, age and area 416 



of site qualities in field 448 



Seventeen Inch log rule 33 



Shade, effect on diameter growth 353 



Shake Ill 



Shingle bolts, definition 15 



measurement 122 



Shop grades 457 



Short cord 121 



Shortleaf pine, diameter growth, La., Table LV 362 



Shrinkage : 54 



Similar triangles as basis of height measure 235 



Simoney's formula 22 



Site classes and average height of timber 291 



based on height growth for construction of yield table 401 



on yields per acre, for yield tables 406 



use in estimating 292 



classifications, standards based on height of tree at 100 years, Table LX . . 387 



factors, or quality of site 384 



qualities, height growth a basis for 386 



separation in field 448 



volume growth a basis for 385 



Site quality, averaging for entire area 449 



effect on diameter growth 352 



Six classes of averages employed in timber estimating 258 



Size of area units, relation to per cent of area to be estimated 262 



Slabbing and sawdust deductions in 10 log rules, Table IX 62 



waste, distribution, Table VII 56 



Slabs and edgings, waste from : . . 50 



as affecting over-run 48 



deductions by, for defects 114 



