SPECIES OF WOODS. 



113 



Physical Qualities: Light in weight 

 (51st in this list) ; 27.77 Ibs. per cu. ft., 

 sp. gr. 0.4456; weak (65th in this list) ; 

 very brittle (64th in this list) ; soft 

 (46th in this list) ; shrinks consider- 

 ably ; warps and checks badly ; soft, weak, 

 indents without breaking; splits easily. 



Common Uses: Lap-boards, baskets, 

 water wheels, fuel and charcoal for gun- 

 powder. 



Remarks: Its characteristic of in- 

 denting without breaking has given it 

 use as lining for carts and as cricket 

 bats. Of the many willows, the most 

 tree like in proportion in eastern Nortli 

 America. Bark contains salvcvlic acid. 



Radial Section, 

 life size. 



Cross-section, 

 magnified 37^ diameters. 



langential Section, 

 life size. 



