George Sutherland, Federal Reserve Bank of Richmond v…
“ But the usage here invoked is not that, but is one of special application to a case where the collection of a check is intrusted to the very bank upon which the check is drawn and where payment is accepted in a medium which the contract, read in the light of the law, forbids. The special situation with which we are dealing is controlled by a definite rule of law which it is sought to upset by a custom to the contrary effect. It is not now necessary to consider the effect of a custom which contravenes a settled rule of law or the limits within which such a custom can be upheld. ”
