FORESTRY OF JAPAN. 3 I 



Asama and in the Azumi count}- of Shinano province. Sonic 

 grow on the slope of Mt. Nikko spontaneously but elsewhere 

 there exist very few of its natural forests. This tree grows on 

 dry soil of volcanic strata making a healthy growth in the sun 

 shine. The wood being hard and durable, is highly prized as 

 the materials for houses, ships, telegraph posts, earth works, 

 and others. As it grows very rapidly, there are risks con- 

 nected with the building up of forests by cultivation. In fact, 

 since it grows with favourable results in poor and desolate 

 soil, the districts for the planting of this tree has recently 

 been extended through the entire part of Honshu and Hok- 

 kaido. 



In this zone, great varieties of deciduous broad-leaved 

 trees are grown occupying a greater part of the forest area 

 but they seldom grow unmixed with other trees. Konara 

 [Qucrcus glanci'difcra /.), Kashiwa (Qucrcus dentata Thunb.), 

 Onara {Querent crispula />/.), Kaba (Betula species), Doro-no- 

 ki (Populus bulsamifcra L. var suaveolcus Loud.). Katsura 

 (Cercidiphylluiu japonieum S. et Z.), Han-no-ki (Alnus japoui- 

 ca S. et Z), and Buna [Fagus sylvatica L. var. Sicboldi Maxim.) 

 constitute pure single aged forests respectively and extend over 

 Honshu and the southern half of Hokkaido while other 

 varieties of deciduous broad-leaved trees grow irregularly mixed 

 with numerous kinds of other broad-leaved trees and conifers. 

 The following species are the principal forest trees in reference 

 to the forest economy. 



Keyaki (Zelkoiva acuminata PL). Of the broad-leaved 

 trees growing in Japan, no other tree enjoys a wider utilization 

 and a greater respect than this species. This species grows to 



