61 



MISCELLANEOUS NOTES. 



While gathering the data for the pine tables in this bulletin 

 it was possible to investigate several related problems which 

 are of especial interest to lumber operators. The available 

 data may not be sufficient in every case to yield conclusive 

 results, but they are offered for what they are worth. 



Sawing Boards and Planks. 



As has been stated before, nearly all our native pine logs 

 are sawed in round-edge lumber in two general classes, the 

 first being box boards which are usually 1 or 1| inches in 

 thickness, and the second plank or butt cuts, which are 

 2| inches in thickness. The log scale on page 12, compiled 

 by the Massachusetts Forestry Department, was derived 

 from logs sawed into box boards, while the scale com- 

 piled at the Harvard Forest was derived from logs sawed 

 largely into plank. If the two scales are compared, one will 

 note that with the smaller logs box boards show a higher 

 yield than plank, while in the larger logs the positions are 

 reversed. The following diagram of a 2|-inch plank taken 



A _C 



9 



Comparison of Scale in Saw'vr\g 2. '/ " Plar\V< cmd I " BocxrcAs 



from a small log will serve to explain the reason. The plank 

 is scaled on the narrow face C-D and the result multiplied 



