The petitioner, first having obtained leave of court so to do, filed a petition for an alternative writ of mandate or prohibition. The order to show cause was issued, and the respondents filed a return objecting, among other things, to the jurisdiction of this court to issue a writ of mandamus or prohibition in the matter. The respondents, upon the application of the complainant in the case of West Coast Petroleum Corporation v. Shell Oil Company, and others, now pending in the District Court of the United States' for the Western District of Washington, issued a subpmna duces tecum to E. L. Miller, an officer of the Shell Oil Company residing in this district, directing the witness to appear before Mrs. M. Y. Collins, a notary public in the city and county of San Francisco, state of California, with certain corporate records, and to give his testimony for use at the trial of the case in the above-mentioned court.

The application for the subpmna duces tecum and the order for its issuance were made without notice, but after its issuance the petitioners moved the court upon due notice to vacate the order and to quash the *395 subpoena duces tecum. This motion was duly presented and heard and the court denied the same' modifying the subpoena duces’ tecum, however, by directing the witness to furnish a tabulation in lieu of certain documents specified in the original subpoena. The contentions made there, which are renewed here, were as follows:

First, that the affidavit in support of the application was insufficient, in that it merely averred that the petitioner and affiant “believed” that the documents described in the applications for the subpoena duces tecum contained evidence material to the trial.

Second, that there is no sufficient description of the documents desired, and that the demand for their production is a mere fishing expedition.

Third, that the effect of the order made would be to substitute the subpoena duces tecum for a bill of discovery.

The pending action in which it is sought to take the deposition is an action at law for damages alleged to have resulted to the plaintiff by reason of an unlawful conspiracy in violation of the Sherman Anti-Trust Act (15 USCA §§ 1-7, 15).

It is contended by the respondents that this court has no power, that is, no jurisdiction, to issue either the writ of mandamus or writ of prohibition to the respondents; that the power of this court to issue sueh writs granted by 28 USCA § 377, is in aid of the appellate jurisdiction of this court only. The question stands at the threshold of this matter, and is not altogether free from difficulty. In Hammond Lumber Co. v. United States District Court for District of Oregon, 240 F. 924, 926 , Judge Gilbert, speaking for this court, said:

The Circuit Court of Appeals of the Tenth Circuit in Keaton v. Kennamer, 42 F.(2d) 814, 815 , had under consideration a question almost identical with that now before us. Speaking of an order of the District Court for the examination of the books of the defendant and the application to the Circuit Court of Appeals for writ of prohibition to prevent the execution of the order, the court said: “The substance of this statement does not appear in the order, but accepting it as,true it can hardly be said that the order was an improper one. Moreover, were it found to have been improvidently entered it is not within our power to review and correct it in this proceeding. Section 377, title 28, U. S. Code (28 USCA § 377), provides in part: ‘The Supreme Court, the circuit courts of appeals, and the district courts shall have power to issue all writs not specifically provided for by statute, which may be necessary for the exercise of their respective jurisdictions, and agreeable to the usages and principles of law.’ The limitation, it is observed, is to writs ‘necessary for the exercise of their respective jurisdictions.’ We have now no jurisdiction of the cause pending in the District Court, nor will our jurisdiction over that cause, that may be acquired in the future, be defeated by the enforcement of the order of inspection. McClellan v. Carland, 217 U. S. 268 , 30 S. Ct. 501 , 54 L. Ed. 762 ; Barber Asphalt Paving Co. v. Morris (C. C. A.) 132 F. 945 , 67 L. R. A. 761; Hammond Lumber Co. v. U. S. *396 District Court (C. C. A.) 240 F. 924 ; In re Dennett (C. C. A.) 215 F. 673 .”

The authority of the Supreme Court to issue writs of prohibition and mandamus is somewhat broader than that of the Circuit. Courts of Appeals being found in section 688 of the Revised Statutes now Jud. Code § 234 (28 USCA § 342), as well as section 716 now Jud. Code § 262 (28 USCA § 377), which applies to both courts. Dealing with the power of the Supreme Court to issue a writ of mandamus to a lower court, the Supreme Court in the recent case of Maryland v. Soper (No. 1), 270 U. S. 9 , 46 S. Ct. 185 , 189, 70 L. Ed. 449 , speaking through Chief Justice Taft, said: “Mandamus is an extraordinary remedy which is issued by this court under Rev. Stats. § 688 now Judicial Code, § 234 [28 USCA § 342], to courts of the United States in the exercise of its appellate jurisdiction, and in civil eases does not lie to compel a reversal of a decision, either interlocutory or final, made in the exercise of a lawful jurisdiction, especially where in regular course the decision may be reviewed upon a writ of error or appeal.”

Jurisdiction to issue the subpoena duces tecum is conferred by 28 USCA § 647, upon the respondents. The question whether or not the affidavit was sufficient to invoke that jurisdiction and whether or not the or-' der for the subpoena was erroneous are matters which cannot be reviewed by us in a mandamus or prohibition proceeding.

Petition denied, and proceeding dismissed.