Part V.] Sweet: On Air Seasoning of Indian Timbers. 
39 
(36) Hopea Wightiana (Appendix I — 36). South Mangalore Division, 
Madras. 
This species, which is said to be worthless as timber in this region^^ 
was depreciated very slightly during the seasoning by surface crack- 
ing, twisting, or splitting ; but was severely damaged by fungi in both 
the heartwood and sap wood. Borers worked in the timber to a 
certain extent in the heartwood and sapwood, but in the former case 
the damage was probably done in the living trees by live-wood 
borers. 
Girdling and seasojiing in the leg gave the poorest results because 
of decay. Curiously enough, in the former case the heartwood was 
badly decayed and the sapwood intact except for borers, while in the 
latter case the sapwood was decayed and the heartwood intact. 
Green conversion gave the best results and is the treatment recom 
mended for this timber. Prompt conversion immediately after felling 
is essential. 
(37) Hymenodictyon excelsum (Appendix I — 37). Gonda Division, 
United Provinces. 
Tills timber seasoned very satisfactorily with little damage from 
cracking, on the one hand, -or insects and decay on the other. Cuiiping 
and twisting resulted in some depreciation, but the damage from these 
causes might easily iiave been eliminated by more careful stacking. 
A few wide boards which were properly piled seasoned with no twisting 
whatever. 
The wood which was water seasoned was somewhat attacked by 
white ants, but there is every reason to thinlt that this damage was 
largely due to the storage conditions. Girdling resulted in slight blue 
staining. 
Girdling and green conversion actually gave the best general results, 
and seasoning in the log slightly the worst; but all methods gave very 
satisfactory results with little real difference among them. 
(38) Juglans regia (Appendix I — 38). Hazara Division, N.-W. F. 
Province. 
The principal defect noted in connection with the seasoning of this 
wood M^as splitting which was most pronounced in seasoning in the log 
and water seasoning. Surface cracking and warping were negligible. 
A slight amount of damage was done by borers in the living trees and 
to the timber during seasoning in the log and when girdled, but it was 
of little importance except as an indication of what may happen when 
this timber is not promptly converted. 
Seasoning in the log resulted in the most sphtting and gave the 
poorest results. 
There was no marked difference in the results of the other methods 
-of seasoning although green conversion reduced the splitting slightly 
more than the other methods and gave a little the best results. 
I 186 0 
