Concededly the parties could, by independent actions, assert their grievances; and ordinarily whichever sued first thereby furnished to the other the occasion to assert his
Of course, as indicated, if, in an action by the carrier for the charges, a shipper cannot counterclaim for a cause of action ordinarily pleadable as such, then, as a corollary, in an action by the shipper, the carrier should not be permitted to counterclaim on a cause of action for tariff charges. This must be so, if, as a basis of the proposition, there be the asserted necessity of eliminating all opportunity to collude or compromise, or to set off liabilities in contravention of the duty to collect tariffs in money. Now, when the matter is thus viewed, we appreciate that there is no ground for differentiating one ¡suit brought by either party, wherein the other counterclaims, from distinct and separate suits by each against the other; the one.furnishing, the other excluding, inherently, occasion for or possibility of compromising, colluding, or in fact setting off. Indeed,- when we consider litigation as a cover or device for accomplishing any one of these objects, the latter means might prove far more effective. Therefore, if the prohibited object may be accomplished as well, in the latter as in former situation, its possibility is not relevant as a basis for the conclusion that in the one, and not the other, the procedural right must be denied. Plainly there is no ground for treating suits by one wherein the other counterclaims as presumptively collusive; and the mere circumstance that it may result -procedurally in setting off the amount due or awarded to the other, thus leaving a balance to be compulsorily satisfied, will not, in my judgment, prima facie or otherwise (unless actual fraud or collusion be proved), violate the principle announced in Louisville, etc., Ry. Co. v. Mottley, 219 U. S. 467, 31 Sup. Ct. 265, 55 L. Ed. 297, 34 L. R. A. (N. S.) 671.
An order may be entered overruling the demurrer to the counterclaim, with leave within 20 days to reply.