Part y.] Sweet: On Air Seasoning of Indian Timbers. 
25 
mould on the sui’face. Trees girdled in March and felled after 14 
months were entirely unattacked by borers in the United Provinces, 
while those girdled in January and felled after 18 months in the 
Central Provinces were slightly attacked. 
Girdling for 18 months followed by conversion and stacking gave 
better results than the other methods under trial, particularly vdth 
reference to surface ctacking. Seasoning in the log gave results 
second to those of girdling. Water seasoning gave the poorest results. 
The twisting, cupping, and warping were more or less the same in all 
methods of seasoning. 
Success in the prevention of the seasoning defects characteristic 
of this wood depends, more than anything else, upon the care of the 
timber after conversion as regards protection from too rapid drying. 
Ample shelter for the freshly converted timber is required. So far 
as possible, conversion should be carried out during or near the end 
of the rainy season. 
(8) Anogeissus penduia (Appendix I — 8). Gonda Division, United 
Provinces. 
The species was represented in these tests by very scanty 
material. The timber seasoned v/ith considerable surface cracking 
and cupping, but ■«'ith little splitting. There was no evidence of insect 
attack of any kind. Decay and discoloration were also absent, 
although there was considerable mould on the surface of boards which 
were piled in a poorly ventilated shed. 
Girdling gave the best results because of the reduction in surface 
cracking. This method, however, resulted in somewhat more twisting 
than the other methods, largely due to the method of stacking. 
Seasoning in the log resulted in the greatest amount of surface 
cracking and gave general results considerably poorer than the other 
methods. 
The important point to be borne in mind in seasoning this species 
is the necessity of adequately protecting the freshly converted wood 
against rapid drying so as to reduce the surface cracking. Careful 
stacking is also necessary to eliminate the cupping and twisting. 
Conversion should be carried out during the rainy season, or as near 
the end of the rains as possible. 
(9) Artocarpus hirsuta (Appendix I — 9). Coorg. 
The results of the seasoning of this timber were very good and 
such as to justify classification of the species as a non-refractory 
w'ood. The amount of surface cracking was slight and did little 
damage to the timber. The cupping might easily have been 
prevented by greater care in stacking. There was no insect damage 
under any method of treatment. The sapwood of the timber seasoned 
in the log was somewhat decayed. 
[ 171 0 
