A stake-yard test on 28 indigenous species was carried out to determine
their natural durability. The test consisted of burying standard size timber
specimens under the ground and recording the lime taken to decay. Based on
the result durability classification of these Limbers has been made and
suggestions arc made for their uses in practice. Since durability of a timber
often dictates its preservative treatment, treatability of the same is also
furnished along with this classification. It is found that non-durable Limbers
arc more easily treatable than the durable ones.