Stephen Johnson Field,
United States v. Barlow (132 U.S. 271…
“ It would be indeed a mischievous doctrine in its consequences if a decision thus made could conclude the government from recovering its money paid for additional stock and carriers which were never required and never employed in its service. It is also true that where the subjects in relation to which the contract of parties is made are necessarily of an uncertain and speculative character or value, and that is known to the parties, a mere mistake by them in their estimate of the value is not deemed sufficient to authorize a recovery of the moneys paid upon the erroneous estimate. ”
