Part V.] Sweet: On Air Seasoning of Indian Timbers. 141 
2. Vertical stacking . — A support will be necessary against which 
to lean the planks, a convenient form is shown in the attached sketch 
the planks being set up on end on alternate sides. 
Eecording Eesults 
Special forms for recording dates of felling, laying to seasoning, 
inspection and results will be supplied. In each depot logs should 
be serially numbered throughout irrespective of species a note being 
made in the register regarding the latter and the scantlings obtained 
from each log will also be serially numbered and will be shown as 
the denominator of a fraction of which the numerator is the log 
number: thus 1/3 means the third plank or scantling obtained from 
log number 1. 15/6 means the sixth plank or scantling obtained 
from log number 15, etc. Care should be taken to clearly number 
the logs and sawn material, more especially of such timber as is to be 
immersed in water. 
Moisture Tests. 
AiTangements will be made by the Forest Economist for carrying 
out tests for moisture at the time of final inspection. 
The following notes on the procedure to be followed apply to each 
species taken up for experiment: — 
1. Natural seasoning in the log. — Select six logs, number and place 
them under cover on skids. After 18 months convert three logs 
radially and three tangentially into either scantlings, planks, battens, 
etc. Of the converted material so obtained by each method stack 
half the planks horizontally and half vertically or as near so as possible 
The scantlings and battens should all be stacked horizontally. 
2. Green conversion. — Convert six logs as soon after felling as 
possible of which three should be radially and three tangentially cut. 
All converted material to be numbered. Of converted material so 
obtained by each method stack half the planks horizontally and half 
vertically, the remaining material all horizontally. 
3. Green conversion and water seasoning combined. — Convert six 
logs as soon after felling as possible : cut three radially and three 
tangentially and number each piece Immerse in water for three 
months. The simplest method for this is to bore a hole through one 
end of each scantling or plank, wire a number of them together 
and anchor them to the bank of tank or river. In all cases the 
material should be completely immersed, if necessary weighted down. 
After period of immersion remove and stack half the planks from eacn 
method of conversion horizontally and half vertically. The remaining 
material should be stacked horizontally. 
4. Girdling. — Girdle two or more trees from which to obtain a 
selection of six logs. In girdling it is necessary to cut down to, and 
into, the wood. 
[ 287 I] 
