4. If any part of any outside line, central line, concession or range line intended in the original survey to be straight has been obliterated or lost, the land surveyor shall then run a straight line between the two nearest points or places where such line can be clearly and satisfactorily ascertained, and shall plant such intermediate posts or boundaries as he may be required to plant in the line so ascertained, and the limits of each lot so ascertained shall be the true limits thereof.
R. S. 1964, c. 263, s. 86.