SAWN TIMBER. 



559 



Quarter-balks (bois tie quurticr) are produced commonly in 

 France by sawing two cuts at right angles to one another 

 through the heart of a tree. 



3. Sawn Timber. 



[Various methods of sawing timber are shown in Figs. 322 

 to 325, the best sawn pieces being obtained by cutting as much 



Fi.ir. :i2L'. 



Methods of sawing, after Boppe. 



Fig. 325. 



as possible in the direction of the medullary rays, as wdod has 

 a better appearance (silver-grain), and stands friction better 

 in this way. Tr.] 



Scantling, battens and planking, comprise the different 

 forms of timber after the stem has received several saw-cuts 

 lengthwise. Naturally, in these forms of converted timber 

 the full diameter of the stem is no longer retained, except 

 sometimes in one direction, and the length of the pieces is 



