INDIAN FOREST RECORDS. 
Vol. Vi 
1918 
Part IV. 
A Further Note on the Antiseptic Treatment of Timber, 
recarding results obtained from past experiments. 
■ ~ % 
By 
R. S. PEARSON, f.l.s., i.f.s.. 
Economist at the Forest Research Institute, Dehra Dun, India. 
PART I. 
PREVIOUS RECORDS AND OBJECTS OF THE INVESTIGATION. 
1. Record of Previous Work. 
A preliminary note dealing with the question of the Antiseptic Treat¬ 
ment of Timber in India was published in 1912, Indian Forest Records , 
Volume HI, Part II. This note briefly outlined the past history of 
the Antiseptic Treatment of Timber in India, suggested Indian timbers 
suitable for treatment, discussed the various methods of treating timber 
in vogue at that time, gave the results of laboratory experiments carried 
out by the Open Tank process, and finally, laid down a scheme according 
to which it was proposed to carry out further experiments in the field. 
The proposals made on pages 105 to 107 of the above-mentioned 
publication, have been given effect to and as six years have elapsed 
since the results of the various experiments have been published, it is 
thought advisable to place them on record without further delay. 
2. Primary factors governing the treatment of timber in India. 
In practically all parts of the world, the question of treating timber 
antiseptically has received consideration. In some countries it has 
already reached the position of a well-established industry, in others the 
work is iu its infancy ; while, in recent years, a great impetus has been 
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