CATALOGUE OF THE TIMBERS OF THE WORLD 21 



The concentric layers are very clearly defined. The pores are open 

 and numerous in the spring growth, but exceedingly small in the autumn 

 growth. The medullary rays are very small, fine, clear, and parallel. 



In the accompanying drawing, the figure A represents the leaf and 

 fruit of ash {Fraximis mandschiirica) , the Japanese " Tamo," and B is 

 " Sen " (Acanthopanax ricinifolium). 



"Sen" 



Aspen. Popnlus tremula, Linn. Europe. 



The colour of the wood is a light yellowish-grey ; it is exceedingly 

 tough and close-grained and somewhat resembles alder. It is a beautiful 

 wood, but is very apt to warp and twist. Its most important use is for 

 match-making, for which purpose it is very valuable. 



A report appeared in the Timber Trades Journal of October 5, 19 18, 

 as foUows : 



" At Bitterne, on the banks of the River Itchen, in clearing the ground 

 for extensions to H. J. Beazley's shipyard and engineering works, an aspen 

 tree was recently cut down. The trunk was over 35 feet high, its girth 

 13I feet, and when uprooted the base of it measured over 27 feet round, 



