hearsay as to boundaries

That boundaries may be proved by hearsay testimony, is a rule well settled... Land marks are frequently formed of perishable materials, which pass away with the generation in which they were made. By the improvement of the country, and from other causes, they are often destroyed. It is therefore important, in many cases, that hearsay or reputation should be received to establish ancient boundaries: but such testimony must be pertinent, and material to the issue between the parties.