INDIAN FOREST RECORDS 
Vol. VI. ] 
1918 
[ Part V. 
STATISTICS 
Compiled in the Office of the Silviculturist, Forest 
Research Institute, Dehra Dun, during 1916-17. 
INTRODUCTION. 
It is desirable again to point out that the figures given for girth 
increments do not represent the rate of growth in even-aged crops. 
They attempt to indicate the development under existing conditions, 
that is in untended and irregular forests, where the early life of the 
trees is spent necessarily in a semi-suppressed state. Only the figures 
from combined sample plots should be used for reference ; the figures 
for the individual sample plots are given for comparison one with 
another. Some misapprehension has been caused by the application 
of the figures to what may be expected from even-aged and tended 
crops. This is not the object of publication, which is rather to 
indicate the need for alteration in treatment when the growth appears 
unreasonably slow. Insufficient data have been collected as yet to 
estimate the girth increment of most Indian trees when grown in 
regular crops. For Sal however, the remeasurement of the Forest 
Research Institute sample plots has afforded an opportunity, and a 
note on the subject will be published shortly. The Silviculturist 
wishes to express his indebtedness to the following officers : Messrs. 
J. L. Baker, W. G. ' C. Breakey, M. W. Clifford, E. R. Comber, 
J. Copeland, P. J. ^Draper, H. M. Glover, H. H. Haines, R. G. A. 
Hannah, J. P. Haslett, J. N. Oliphant, and J. Whitehead. 
EDWARD MARSDEN, 
Silviculturist . 
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