
237 U.S. 434 (1915)
ELLIS
v.
INTERSTATE COMMERCE COMMISSION.
No. 712.
Supreme Court of United States.
Argued April 12, 15, 1915.
Decided May 10, 1915.
APPEAL FROM THE DISTRICT COURT OF THE UNITED STATES FOR THE NORTHERN DISTRICT OF ILLINOIS.
*435 Mr. Frank B. Kellogg, with whom Mr. C.A. Severance, Mr. Robert E. Olds, Mr. Alfred R. Urion and Mr. Charles J. Faulkner were on the brief, for appellant.
Mr. E.W. Hines, with whom Mr. Joseph W. Folk was on the brief, for appellees.
*442 MR. JUSTICE HOLMES delivered the opinion of the court.
This is an appeal from an order of the District Court made upon a petition of the appellee, the Interstate Commerce Commission, filed under the act to regulate commerce, § 12, c. 104, 24 Stat. 379, 383. The order directs the appellant to answer certain questions propounded and to produce certain documents called for by the appellee. There is no doubt that this appeal lies. The order is not like one made to a witness before an examiner or on the stand in the course of a proceeding inter alios in court. Alexander v. United States, 201 U.S. 117. It is the end of a proceeding begun against the witness. Interstate Commerce Commission v. Baird, 194 U.S. 25. Therefore, we pass at once to the statement of the case.
The Interstate Commerce Commission, reciting that it appeared from complaint on file that the allowances paid for the use of private cars, the practices governing the handling and icing of such cars, and the minimum carload weights applicable to the commodities shipped *443 therein, on the part of carriers subject to the act to regulate commerce, violated that act in various ways, ordered that a proceeding of investigation be instituted by the Commission of its own motion to determine whether such allowances, practices, or minimum carload weights were in violation of the act as alleged, with a view to issuing such orders as might be necessary to correct discriminations and make applicable reasonable weights. It ordered that carriers by railroad subject to the act be made parties respondent, and, later, that all persons and corporations owning or operating cars and other vehicles and instrumentalities and facilities of shipment or carriage of property in interstate commerce be made parties also. In the proceedings thus ordered the questions propounded were put to the appellant, the vice president and general manager of the Armour Car Lines.
The Armour Car Lines is a New Jersey corporation that owns, manufactures and maintains refrigerator, tank and box cars, and that lets these cars to the railroad or to shippers. It also owns and operates icing stations on various lines of railway, and from these ices and reices the cars, when set by the railroads at the icing plant, by filling the bunkers from the top, after which the railroads remove the cars. The railroads pay a certain rate per ton, and charge the shipper according to tariffs on file with the Commission. Finally it furnishes cars for the shipment of perishable fruits, &c., and keeps them iced, the railroads paying for the same. It has no control over motive power or over the movement of the cars that it furnishes as above, and in short, notwithstanding some argument to the contrary, is not a common carrier subject to the act. It is true that the definition of transportation in § 1 of the act includes such instrumentalities as the Armour Car Lines lets to the railroads. But the definition is a preliminary to a requirement that the carriers shall furnish them upon reasonable request, *444 not that the owners and builders shall be regarded as carriers, contrary to the truth. The control of the Commission over private cars, &c., is to be effected by its control over the railroads that are subject to the act. The railroads may be made answerable for what they hire from the Armour Car Lines, if they would not be otherwise, but that does not affect the nature of the Armour Car Lines itself. The petition of the Interstate Commerce Commission to compel an answer to its questions hardly goes on any such ground.
The ground of the petition is that it became the duty of the Commission to ascertain whether Armour & Company, an Illinois corporation shipping packing-house products in commerce among the States, was controlling Armour Car Lines and using it as a device to obtain concessions from the published rates of transportation, and whether Armour Car Lines was receiving for its refrigerating services unreasonable compensation that enured to the benefit of Armour & Co., all in violation of §§ 1, 2, 3, and 15 of the act.
If the price paid to the Armour Car Lines was made the cover for a rebate to Armour & Co., or if better cars were given to Armour & Co. than to others, or if, in short, the act was violated, the railroads are responsible on proof of the fact. But the only relation that is subject to the Commission is that between the railroads and the shippers. It does not matter to the responsibility of the roads whether they own or simply control the facilities, or whether they pay a greater or less price to their lessor. It was argued that the Commission might look into the profits and losses of the Armour Car Lines (one of the matters inquired about), in order to avoid fixing allowances to it at a confiscatory rate. But the Commission fixes nothing as to the Armour Car Lines except under § 15 in the event of which we shall speak.
The appellant's refusal to answer the series of questions *445 put was not based upon any objection to giving much of the information sought, but on the ground that the counsel who put them avowed that they were the beginning of an attempt to go into the whole business of the Armour Car Lines  a fishing expedition into the affairs of a stranger for the chance that something discreditable might turn up. This was beyond the powers of the Commission. In re Pacific Railway Commission, 32 Fed. Rep. 241. Interstate Commerce Commission v. Brimson, 154 U.S. 447, 478, 479. Harriman v. Interstate Commerce Commission, 211 U.S. 407. The Armour Car Lines not being subject to regulation by the Commission its position was simply that of a witness interested in but a stranger to the inquiry, and the Commission could not enlarge its powers by making the Company a party to the proceedings and serving it with notice. Therefore the matter to be considered here, subject to the qualification that we are about to state, is how far an ordinary witness could be required to answer the questions that are before the court.
We have stated the nature and object of the investigation, and it is to be observed that not every advantage that may enure to a shipper as the result of the position of his plant, his ownership or his wealth is a preference. Interstate Commerce Commission v. Diffenbaugh, 222 U.S. 42, 46. But the intervening corporation may be a means by which an owner of property transported indirectly renders the services in question, and in that event its charges are subject to the Commission by § 15. The supposed unreasonable charge may be used as a device to attain the forbidden end and therefore reasonable latitude should be allowed to see if any such device is used. Interstate Commerce Commission v. Brimson, 154 U.S. 447, 464. But still until Armour Car Lines is shown to be merely the tool of Armour & Company it has the general immunities that we have stated. With the *446 foregoing general principles in view we proceed to dispose of the questions asked.
It is not necessary to repeat the many pages of questions at length. They are grouped by the Government into classes and numbered so that the result may be stated in comparatively few words. The first group concerning interlocking officers and relations between Armour Car Lines, Armour & Company and Fowler Packing Company, questions 1, 2, 3 and 7, should be answered. The only objection was on account of the general intent avowed as we have stated. So also questions 4, 5, 6, concerning the acquirement of cars previously owned by Armour and Company and Armour Packing Co., making the second group. Also questions 8, 9, 12 and 13, as to contracts of Armour Car Lines with Armour & Company and Colorado Packing Company for furnishing cars and icing service. The next group, so far as the questions concern the ownership, manufacture and repair of cars, Nos. 10, 11, 14, 16, 17 and 19, need not be answered, except 11 "where are the cars of Armour Car Lines repaired when not repaired in shops of railroads?" The last two groups concern matters into which the Commission was not authorized to inquire. The fifth, questions 15, 20, 21, 25, 26, 27, and 28, called for statements showing profit and loss, credits and debits to income &c., so far as the same related to transportation as defined in the act; and the sixth, Nos. 22, 23, and 24, for statements showing the amount invested in each icing plant and the detailed results of the operation of each, amount invested in each, cost per ton of ice at the source of supply &c., &c., all matters belonging to the private business of the Armour Car Lines and not open if our interpretation of the law is correct. Our decision, however, must be without prejudice to the possibility that the case may be brought within § 15 by evidence to the effect stated above.
Decree reversed without prejudice.
*447 MR. JUSTICE DAY, while not differing from the general views taken by the court, is of opinion that the nature of the inquiry under § 15 made it proper that all the questions should be answered.
MR. JUSTICE McREYNOLDS took no part in the consideration or decision of this case.
