Section 68(i) in Police Regulations, Bengal , 1943
(i)When an officer opens a cover containing a case diary, he shall stamp or write on the diary the date, if any, which has been stamped on the cover under clause (f) or, if there is no such date on the cover, the date on which he received it, and shall, after perusing the diary, file it with any other diaries relating to the same case which are in his possession.
