SPECIES OF WOODS. 



83 



Physical Qualities: Weight, light 

 (4rth in this list) ; 28 lbs. per cu. ft., 

 sp. gr., 0.4584; medium strong (41st in 

 this list) ; elastic (21st in this list) ; 

 soft (54tli in this list); shrinkage, 3 

 per cent ; warps little ; not durable ; easy 

 to plane, tolerably easy to saw, hard to 

 chisel neatly ; splits easily in nailing. 



Common Uses: Sounding boards, 

 construction, paper pulp, ladders. 



Remarks: The exudations from this 

 species are used as chewing gum. Bark 

 of twigs is used in the domestic manu- 

 facture of beer. The use of the wood for 

 sounding boards is due to its resonance, 

 and for ladders to its strength and 

 li:;IitiiC". 



Radial Section, 

 life size. 



Cross-section, 

 nagnified :i7y2 diameters. 



Tangential Section, 

 life size. 



