76 



of eighty to one hundred years that is now being 

 considered. 



1 6. Juglans cinerea. 



This displays a similar attitude to the fore- 

 going species, but shows a power of standing a 

 somewhat colder climate. The poor value, of its 

 timber prohibits its cultivation in places where 

 the black walnut can be raised. 



17. Liriodendron tulipifera. 



This tree can be grown very easily within the 

 limit assigned to the sweet chestnut and on the 

 warmer sites in the Oak zone — that is, under 

 the lateral protection of other broad-leaved trees 

 and on soils varying from good to best. This 

 tree loves the light and rapidly builds up 

 a straight stem and produces a considerable 

 quantity of timber in a short period of time. 

 The seed usually germinates very well. 



Transplantation is easy, and this tree may 

 be recommended for planting small areas or in 

 clumps in the broad-leaved woods. 



18. Platanus occidentalis. 



The plane is recommended for planting river 

 banks liable now and again to inundation in the 

 warmer regions of the broad-leaved woodland, 



