SPECIES 0¥ WOODS. 



133 



0.(J553 ; very strong (2nd in this list); 

 very elastic (2d in tliis list) ; medium 

 hard (22d in this list) ; shrinkage, 6 



per cent. ; warps ; not durable ; 



rather hard to work, polishes well; splits 

 with difficulty, holds nails well. 



Common Uses: Furniture, spools, 

 button molds, shoe lasts, shoe pegs, pill 

 boxes, yokes. 



Remarks: The birches are not usu- 

 ally distinguished from one another in 

 the market. 



Kauial section, 

 life size. 



Cross-section, 

 magnified 37j^ diameters. 



'langential Section, 

 life size. 



