74 



g. Carya amara. 



Apart from its advantage as a rapid growing 

 tree, this hickory possesses no other valuable 

 quality. The same may be said of 



10. Carya tomentosa. 



11. Carya sulcata 



can only be grown on the best soil, where the 

 sweet chestnut also reaches maturity. 



12. Castanea americana. 



Treatment is the same as in the case of the 

 European chestnut. Attempts that have been 

 made to grow it outside its territorial and climatic 

 zone have not shown better results than with its 

 European relative. 



13. Catalpa speciosa. 



This valuable species of wood seems only to 

 thrive where the nuts of the sweet chestnut come 

 to maturity. The chief risks it runs are late and 

 winter frost. It should be raised in clumps 

 under a light screen of tall timber among broad- 

 leaved trees. 



