al tax purposes. These findings are consistent with the view that Mead believed his claims were properly prepared. Mead’s testimony was that he believed that the claims were correct and that he was entitled to as much as he received from the government. It is not surprising that Mead thought his claims were properly prepared. This is not a situation where the meaning of government regulations or forms has long been established. Even lawyers may have differed as to the proper interpretation of the forms. Mead’s operating procedures are more likely attributable to his lack of experience or education in the fundamentals of good business practices rather than to a calculated plan to defraud the government. The remaining appellees had only incomplete knowledge of Mead’s methods and intent. Thus their culpability is even less than that of Mead. In summary, the record falls short of proof of the elements necessary to liability under the False Claims Act.
II. THE MISTAKE THEORY
The government’s alternative theory of recovery is under the common law doctrine of payment by mistake. This remedy is available to the United States and is independent of statute. United States v. Wurts, 303 U.S. 414, 58 S.Ct. 637, 82 L.Ed. 932; United States v. Howell, 9th Cir., 318 F.2d 162; United States v. Borin, 5th Cir., 209 F.2d 145.
“The Government by appropriate action can recover funds which its agents have wrongfully, erroneously or illegally paid. * The Government’s right to recover funds from a person who received them by mistake and without right, is not barred unless Congress has ‘clearly manifested its intention to raise a statutory barrier.’ ” Kingman Water Co. v. United States, 9th Cir., 253 F.2d 588, 590, quoting United States v. Wurts, 303 U.S. 414, 415-416, 58 S.Ct. 637, 82 L.Ed. 932.
The type of mistake which the government asserts is that it mistakenly assumed that it was sharing the cost of the conservation projects with the farmers rather than paying the entire cost (or substantially the entire cost).
If the government made these payments under an erroneous belief which was material to the decision to pay, it is entitled to recover the payments. United States v. Wurts, 303 U. S. 414, 58 S.Ct. 637; Rains v. United States, 312 F.2d 764, 160 Ct.Cl. 535; United States v. Goldberg, E.D.Penn., 158 F.Supp. 544; RESTATEMENT OF RESTITUTION §§ 6, 9, 26. As previously discussed, the government was mistaken in its belief that the appellees had complied with the applicable regulations which require that the claims must be based on actual cost to the farmer measured in terms of cash, enforceable promises, materials and services rendered rather than the “true value” of the completed project. Mead’s forms and invoices were technically incorrect since they were based on value of the projects rather than cost. Consequently, the government was mistaken in its payments to the extent that the payments exceeded the established percentage of the cost of each project; cost being measured by the value given by each farmer in cash, enforceable promises, services, equipment and materials. The case must be remanded to allow the district court to make findings on the issues of number and amount of payments made by mistake.
As the one into whose hands the mistaken payments flowed, Mead is liable to the government for each of the mistaken over-payments. Since Mead was the active force in obtaining the payments and directly received the benefits of the payments, he now must return that portion of the total of the payments which was made by mistake. The other appellees are liable for the mistaken payments because they signed the aid applications and because Mead purported to act in their behalf and they received benefits as a result of the transaction. Wisconsin Central Railroad Co. v. Unit