In Berwind-White Coal Mining Co. v. Chicago & Erie Railroad Co., 235 U. S. 371, 35 S. Ct. 131, 59 L. Ed. 257 (1914), it was held that the filing with the Interstate Commerce Commission of the book of rules as to demurrage of the Car Service Association, of which the railroad was a member, containing a statement of what its rates were, was a compliance with the provisions of the act to regulate commerce requiring the filing of tariff sheets, no objection being taken to the form and the documents being adequate to give notice, and there being proof of posting.