TABLES 



Article No. Title page 

 32 I Comparison of Results Obtained by Scaling the Cubic Con- 

 tents of Logs, at Small End and at Middle of Log 27 



38 II Comparison of Per Cents of Cubic Contents of Cylinders 

 Scaled by Various Log Rules, for Logs 18 Inches in Diam- 

 eter at Small End, with 2-inch Total Taper 37 



41 III Relation of Cubic and Board-foot Contents of 16-foot Logs 



with a Taper of 1 inch in 8 feet, Based on Tiemann's Log 



Rule &-inch Saw Kerf 41 



42 IV Comparison of Blodgett and Tiemann Log Rules for Cer- 

 tain Logs 42 



Effect of Different Methods of Scaling a Log 45 



Gain in Output Secured by Sawing around Compared with 



Slash Sawing in Per Cent of Latter Output 48 



Distribution of Waste between Slabbing and Sawdust 56 



Thickness of Plank to be Deducted for Slab Waste to Coin- 

 cide with a Collar 1.5 Inches Thick. Sawdust Allowance 



20 Per Cent 61 



5J IX Deductions for Slabbing and for Saw Kerf, for 12-inch Logs, 



in Ten Log Rules Based on Formulae. 62 



Over-run, Doyle Rule, Texas 71 



Over-run, Doyle Rule, Ontario 71 



Decimal Values below 12 Inches, for Scribner Log Rule 74 



Conversion of International Rule J-inch Saw Kerf for Other 



Widths of Kerf 81 



76 XIV Conversion of Log Rules with i-inch Saw Kerf and No 



Shrinkage Allowance to Other Widths of Saw Kerf 82 



XV Per Cent of Increase in Sawed Lumber Caused by Sawing 



Lumber of Different Thicknesses 82 



XVI Correction in Per Cents for Contents of Logs in Superficial 

 Board Feet, for Lumber Sawed Less than 1 Inch in Thick- 

 ness 83 



Scaling Practice, or "Scale" in Different Logging Regions. . . 94 



Deductions for Crook or Sweep 116 



Solid Contents of Stacked Wood 127 



Standard Converting Factors for Cordwood 129 



Influence of Length of Stick upon the Solid Cubic Contents 



of a Cord 130 



XXII Influence of Length of Stick on Solid Cubic Contents of a 



Standard Cord, Balsam Fir 130 



XXIII Interdependence of the Stick Length and the Volume of 



Solid Wood per Cord 131 



xix 



