CLASSIFICATION OF HARD-WOODS. 



55 



exposure to light : sapwood yellowish white : 



odourless. Mulberry. Mdrus. 

 (b) Vessels in summer wood small or minute, 



usually solitary : heartwood cherry-red. 



Coffee Tree, Grymnoclddus. 



llll Pith-rays fine, but very conspicuous to the naked 

 eye : heartwood rose-red to brownish : sapwood 

 pale lemon or greenish white ; vessels open. 

 Honey-Locust, Gleditschia. 



fit 





HI 



FIG. 32. Trans verse section of Xettle-tree. (Celtis auslrdlis). 



Pith-rays rather coarse, lustrous : heartwood 

 brownish or greyish orange : sapwood broad, 

 yellowish : broad zone of very large open pores 

 in spring wood : vessels in autumn wood 1 5 

 together in segments of circles. Aildnthus. 

 ** Strikingly dendritic : pores in summer wood minute 

 or small, appearing as finely feathered hatchings on 

 tangential sections. 



