CONTENTS. 



Page. 



Introduction 11 



Units of log measure 12 



Board measure 13 



The various log rules 14 



Comparison of log rules for board measure (table) 16 



The more important log rules 20 



The Scribner Rule (description) 20 



The Scribner ''Decimal C" Rule (table) 21 



The Doyle Rule (description) 25 



The Doyle Rule (table) 26 



The Spaulding Rule 31 



The Maine Log Rule 31 



Standard measure 31 



The Nineteen-inch Standard Rule (description) 32 



The New Hampshire (Blodgett) Rule (description) 32 



Other Standard Rules 33 



Log scaling 34 



Forest Service scaling directions 39 



Cubic measure 43 



Cubing logs by length and middle diameters 44 



Cubing logs by length and end diameters 45 



Solid cubic contents of logs (table) 46 



Converting cubic measure to board measure 51 



Relation between cubic contents and saw cut (table) 52 



Cubic contents of square timber in a round log 53 



The Two-thirds Rule (description) 53 



The Inscribed Square Rule (description) 53 



The Inscribed Square Rule (table) 54 



Cord measure 58 



Timber estimating 58 



Contents of standing trees 60 



Estimate by the eye 60 



5 



