Section 7(3)(iv) in Tamil Nadu Sandalwood Transit Rules, 1967
(iv)Every tree so uprooted and cleaned shall bear its distinctive serial number which shall be written legibly in tar any where on it if not cut up into pieces, or when the tree has been cut up into billets and roots all parts of such tree so cut up shall each bear, at their cut ends the original serial number assigned to the tree so as to admit of identification and check subsequently by the District Forest Officer or his subordinates.