“ We repeat that neither Michigan nor Texas is entitled to the securities if such a disposition of them would contravene Iowa law. A determination of the nature and the extent of the rights of Iowa and its receiver in the securities clearly would not constitute an interference with the jurisdiction of the Michigan and Texas courts. For even if those courts were in possession of the fund, their jurisdiction would not be so exclusive as to bar an adjudication by the federal court of the rights of a claimant to the res or the quantum of his interest in it. ”

“ It would indeed have no such necessary consequence even though the securities in question were in their possession. As held in United States v. Klein, supra, 303 U.S. at page 281, 58 S.Ct. at page 538, 82 L.Ed. 840, a state court may properly adjudicate rights in property in possession of a federal court [3] and render any judgment 'not in conflict with that court's authority to decide questions within its jurisdiction and to make effective such decisions by its control of the property.' And see Riehle v. ”

“ We express no opinion on the merits of the controversy. Nor do we pass on the contention that Ladew v. Tennessee Copper Co., 218 U.S. 357, 31 S.Ct. 81, 54 L.Ed. 1069, prevents the entry of an in personam judgment in the circumstances of this case. ”