30 
Indian Forest Records. 
[Vol. VI 
Summary of results of measurements in Forest Research 
Institute Sample Plots. 
Species— QUERCUS INCANA. 
Experimental Garden, Dehra Dun, United Provinces. 
Sample plot. 
No. 2. 
Thinned or unthinned. 
Thinned. 
Descriptive details .... 
Fertile clayey loam, arable land, 
full. Undergrowth almost 
Plantation in young pole stage. 
Density 
absent. 
Period of measurement 
1912-13 to 1916-17. 
Total number of measurements 
56 * 
Rate of growth in girth. 
Age in years. 
Ft. 
in. 
10 
0 
4* 
20 
0 
91 
30 
1 
3* 
40 
1 
in 
50 
2 
10f 
* 0" to 12"—No. of measts. nil, 12" to 24"—12 measts., 24" to 36"—14 measts, = 
56 measts. * 
itself 
Note.— Nothing has been added for the time required for the seedling to establish 
Record of Periodical Volume Measurements in Forest Research Institute Plots. 
Experimental Garden, Dehra Dun, United Provinces. 
1912-13 
1916-17 
Species. 
? I 
a I 
< 
Quercus incana 
I 
525 
L 356 
Volume p er acre* 
SOLID CUBICFE 
20-6 
26-6 
<» 
o 
If 
S ’>5) 
H 
<S .=J « 
s 611 ! o 
I H 
3,208 3,208 
3,827 j 3,827 
INTERMEDIATE YIEI DS PER ACRE. 
FROM THINNINGS. 
Periodic yields. 
J5S M M 
ss l^'a 
S, if 
' H 
364 
169 
950 
658 
950 
658 
Total to date 
JgM 
£.2 
H 
£.2 
S * 
£ 
950 
1,608 
950 
1,608 
Plan¬ 
tation. 
[ 288 ] 
