Nicholson's Lessee v. Mifflin

2 U.S. 246

Opinion

But,

by the Court:

—The agent is not a competent witness to prove his own authority for the sale of lands, in this way: the contents of the writing must be proved by other witnesses ; and then he might be allowed to shew in what manner he had executed his instructions.

The plaintiff not being able to give any other evidence of this preliminary fact, suffered a non-suit.