28 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 
6. Note on Larix leptolepis grown in Japan. 
By K. KuMg, Chief of the Imperial Bureau of Forestry, Tokio. 
This timber-tree grows naturally in pure woods, or in mixture 
with other species, deciduous and coniferous, in Alpine localities, 
in the central mountain ranges of volcanic districts in our 
principal island, Honshin, especially on Mt. Fuji, Mt. Nantai 
(near Nikko), Mt. Asama (near Karinzawa), and mountains in 
the county of Shinano. 
The typical natural woods occur on Mt. Fuji, about 5000 to 
6000 feet above sea-level, and these consist of pure crops of 
trees with well-developed stems. On the plateau near Mt. 
Asama, where the soil is chiefly composed of volcanic dust, this 
timber-tree is cultivated successfully over a very extensive area, 
the State forests alone covering over 24,507 acres. 
The growth in height of this tree is very fast, especially in its 
younger period, as the following Table will show :— 
YIELD TABLE. 
| Mean Basal Diameter, Mean Height, Stem Volume per Acre, 
iK Feet. Feet. Standard Cubic Feet. 
ge, 
Y: ; 
a Quality Quality Quality 
UE Ti: III. Il. Ill. i. If. Ill. 
Io | 0°30] 0°20] o'15 | 40 30 20 982 490 245 
20 | 0°48 | 0°37 | 0°29 | 58 50 | 40 2459 1470 735 
30 0°61 | 0°50 | o'40 | 68 60 52 3920 2700 1470 
0°62 | o-50 | 75 69 60 5490 | 3680 1960 
50 0°79 | 0°68 | 0°58 | 83 75 65 6370 4410 2700 
60 0°86 | 0°77 0°66 87 80) | 70 7110 4900 3190 
70 | 0°93 | 0°83 | 0°73 | 92 | 84 | 85 | 7740 | 5400 | 3580 
aN 
ie) 
° 
Ni 
| 
80 | 0°97 | 0°86 | 0°79} 95 86 79 8290 | 5780 3820 
go 1°00 | 0°93 | 0°84 | 98 go 82 8580 | 6080 | 4130 
100 1°04 | 0°96 0°87 | I00 92 | 84 83860 6330 4210 
This: Table is constructed from very few materials collected 
from the last-mentioned cultivated woods. 
The best quality of timber is produced on somewhat fresh 
deep soil formed from volcanic dust. The tree prefers a rather 
high elevation (over 3000 feet above sea-level) and a cold 
climate. The seed, which ripens in autumn, is usually obtained 
from trees about 60 to roo years old, the quantity sown being 
