DISCUSSION OF LOG RULES. 31 



The following is a comparison of log rules which may be expressed 

 in the form : 



NOTE : The constant c is the fractional part of the log becoming sawdust after an 

 allowance of a inches -from the diameter has been made for slabs. It can be expressed 

 in per cent by multiplying by 100, or moving the decimal point two places to the right. 

 (1 c) in like manner is the fractional part allowed for the manufactured product. 



Champlain : 



Boughman Rotary Saw: (Original values slightly erratic) 



Boughman Band Saw: (Original values slightly erratic) 



Wilson: (Original values slightly erratic) 



Carey: (Original values slightly erratic) 



Baxter : 



Click: (Original values slightly erratic) 



