45. Unless the person claiming or detaining them proves his exclusive right of ownership or possession, all unmarked logs or logs from which the marks are effaced, on lakes, rivers or streams or on their shores or banks or in the sorting booms, shall belong to all the persons who have driven or floated logs on such lake, river or stream during the same season, in proportion to the number of logs which such persons have respectively manufactured, put into the water and driven.
R. S. 1964, c. 84, s. 45.