FORESTRY OF JAPAN. gi 



under this method. It is obvious that the expense for the 

 formation of forests must be economized as much as possible, 

 and this plainly speaks in favour of the natural mrans of 

 regeneration, but in such forests as those found in this, country 

 where trees grow irregularly and are mixed with weeds and 

 undergrowth, it is by far more advisable to resort to the 

 method of artificial planting than the natural regeneration. 



The planting by cuttings is similar to the planting by 

 seedlings and has enjoyed success. It can not be said that 

 method is workable with all tree species, but in some species. 

 and in a few districts, the method is extensively adopted. 

 For hundreds of years, Sugi [Cryptomeria japonica Don.) in 

 the provinces of Higo and Hyuga were regenerated by this 

 method covering an extensive area. Such trees as Doro-no-ki. 

 [Populns balsamifera L. var. suavcokus Land.) in Hokkaido 

 and Hiba {Thnjopsis dolabrata S. et Z.) in Noto province are 

 also cultivated by this method. 



The planting for the protection against the collapse of the 

 soil adopted in dilapidated forests which have no prospect of 

 being grown up under ordinary methods, but with every fear 

 of the outflow of sand. As the preliminary work, the 

 engineering work for the prevention of the collapse of the soil 

 is adopted, and those tree species which make a vigorous, and 

 rapid growth with thick branches are planted. Regarded to 

 the economic interests, these forests in future do not produce 

 profits, but they are chiefly useful for the protection and 

 recouping of forest lands. The trees adaptable to forests 

 of this nature are Kuro-matsu {Pinus thuubergii Parlat.) Aka- 

 matsu {Finns densi flora S, et Z.) and Hageshibari (Al'nus fir- 



