4 
Indian Forest Records. 
[Vol. VIII 
Analyses of Soils and Acknowledgments. 
5. The writer is indebted to Mr. Puran Singh, Chemical Adviser, 
Forest Research Institute, for the moisture determinations in para. 
23 (4) and for the soil analyses given in the Appendix. Samples 
A and B are of the loam in the Dehra Dun Experimental Garden utilised 
in Experiment I, samples C—F are of the local sal forest loam utilised 
in Experiments II-VIII and sample G is of the river sand utilised in 
Experiment II. The writer desires to tender his cordial thanks to Mr. 
P. H. Clutterbuck, C.I.E., Chief Conservator of Forests, United Provinces, 
and to Mr. H. G. Billson, Conservator of Forests, for giving him every 
facility for carrying out, in the local forests, experiments III—VIII 
reported below. To Mr. Clutterbuck’s unique knowledge of the sal 
forests of Northern India the writer is especially indebted for most valu¬ 
able suggestions regarding the conduct of the experiments. 
Experiment No. I. 
Object to determine the ideal seedling development for the locality. 
6. Previous observations indicated that sal seedlings grown in the 
open in the Dehra Dun Experimental Garden, where the soil is kept 
moist by periodic sub-soil irrigation and where frost does practically 
no damage, develop vigorously from the first and do not die back.* 
(Indian Forest Records , V, 4, Part II, 1916, p. 44). The present 
experiment merely consisted in continuing the observations on the 
development of these seedlings. These observations have supported 
the previous conclusion that, under favourable conditions of moisture, 
soil, and light, sal seedlings in this locality develop vigorously and 
continuously from the first and do not die back. 
The details of the plants measured are shown below. Plate 1, Fig. 
1 shows a group of these sal seedlings 5^ years old and Plate I, Fig. 2, 
a group of seedlings 8-g- years old. 
Details of plants measured. 
(1) 6 plants, two years old, measured July 1912, on an area of 51 square 
feet, gave an average height of 5 feet 4 inches (4' 5* to 6' 4"). 
(2) 10 plants, 5£ years old, measured at beginning of February 1919, on an 
area of 90 square feet, gave an average height of 14 feet 9 inches 
(13' 2" to 16' 10"). 
(3) 6 plants, 8£ years old, measured at beginning of February 1919, on an 
area of 54 square feet, gave an average height of 22 feet 3 inches 
(18' 11" to 29'). 
Average 
annual height 
growth in 
inches. 
32-0 
32-2 
31-4 
*For examples of sUch seedlings, one year old, see Ind. For. Fee. V, 4, Part ll, 
1916, Plate II. 
[ 166 ] 
