PROPERTIES OF WOOD. 



Tangential Section. Annual rings only wavy dark bands 

 varying in breadth with the direction of the cut. Medullary 

 rays visible as very numerous short streaks, darker than the 

 surrounding tissue. 





Fi. 1 7. Type of Maplewood (Acer), Fig. 18. Type of Hornbeam-wood 



and wood of Cherry or Plum (Prunus). (Carpinus). 



Sap wood broad ; heartwood bright brown, subsequently 

 becoming darker. 



9. Species oj Cherry and Plum (Prunus). 

 (American, Asiatic and European.) 



These woods greatly resemble that of maples in their struc- 

 tural elements. The spring-wood exhibits a great number of 

 line vessels, which render the annual rings distinct. Differ- 

 encas consist chiefly in the colour of the woods, plum-wood 

 being yellowish-brown and cherry-wood of a reddish tint in 

 the heartwood, with a broad sapwood. 



