Part V.] Sweet: On Air Seasoning of Indian Timbers. 43 
Seasoning in the log and girdling gave the poorest results — damage 
resulting from cupping and splitting and rather excessive surface 
cracking in the latter group. In addition, the timber seasoned by 
these methods was depreciated because of discoloration, especially in 
the former group. 
Although this timber is liable both to cracking and to moulding 
and discoloration, it may be expected to give good results if the logs 
are promptly converted and the timber is properly stacked under some 
protection. 
(15) Seiirebera swietsnioidss (Appendix I — 45). South Chanda 
Division, Central Provinces. 
There was little surface cracking, twisting, or splitting in connection 
with the, seasoning of this species, but a marked susceptibility to insect 
attack especially in timber seasoned in the log. In fact, damage was 
done by borers in all methods of seasoning except girdling. In the 
case of green conversion and icater- seasoning the damage was probably 
done before the logs were converted, inasmuch as they were allowed 
to stand for two months during the hot season after felling and before 
conversion. There was no evidence of decay or discoloration. 
Girdling gave the best general results in that the surface cracking 
was minimized, and there was no insect damage. The absence of 
borers, however, was probably merely accidental. 
Seasoning in the log also reduced the surface cracking and would 
have given good results except for the severe damage done by borers 
vhich rendered tbe timber so seasoned practically useless. 
There v/as little difference between the results of green conversion 
■and water seasoning. Both of these methods resulted in more surface 
cracking than girdling or seasoning in the log. 
Providing this wood is given some partial protection immediately 
after conversion from too rapid drying, good results may be obtained. 
The susceptibility to borer attack makes girdling a decided risk and 
seasoning in the log practically futile. This timber must be converted 
as soon as possible after felling. 
(46; Soymida febrifuga (Appendix I — 46). Sambalp>ur Division, 
Bihar and Orissa. Ganjam Division, Ma.dras. South Chanda 
Division, Central Provinces. 
This timber is inclined to severe damage by surface cracking, split- 
ting, and cupping, and also to depreciation by insects in the sapwood 
of unconverted logs and gh’dled trees. 
In South Chanda girdling minimized the surface cracking and 
splitting and would have given excellent results except the timber was 
badly damaged by borers. In Ganjam and Sambalpur girdling gave 
no better results than the other methods ; so that the advantages of 
girdling this species, especially in view of its liabiUty to borer attack, 
are negative. 
[ 189 0 
