interstate or foreign commerce was brought about could save such restraint from condemnation. The statute under this view evidenced the intent not to restrain the right to make and enforce contracts, whether resulting from combination or otherwise, which did not unduly restrain interstate or foreign commerce, but to protect that commerce from being restrained by methods, whether old or new, which would constitute an interference that is an undue restraint.

c. And as the contracts or acts embraced in the provision were not expressly defined, since the enumeration addressed itself simply to classes of acts, those classes being broad enough to embrace every conceivable contract or combination which could be made concerning trade or commerce or the subjects of such commerce, and thus caused any act done by any of the enumerated methods anywhere in the whole field of human activity to be illegal if in restraint of trade, it inevitably follows that the provision necessarily called for the exercise of judgment which required that some standard should be resorted to for the purpose of determining whether the prohibitions contained in the statute had or had not in any given case been violated. Thus not specifying but indubitably contemplating and requiring a standard, it follows that it was intended that the standard of reason which had been applied at the common law and in this country in dealing with subjects of the character embraced by the statute, was intended to be the measure used for the purpose of determining whether in a given case a particular act had or had not brought about the wrong against which the statute provided.

And a consideration of the text of the second section serves to establish that it was intended to supplement the first and to make sure that by no possible guise could the public policy embodied in the first section be frustrated or evaded. The prohibitions of the second embrace

"Every person who shall monopolize, or attempt to monopolize, or combine or conspire with any other person or persons, to monopolize any part of the trade or commerce among the several states, or with foreign nations, By reference to the terms of § 8 it is certain that the word person clearly implies a corporation as well as an individual.

The commerce referred to by the words "any part" construed in the light of the manifest purpose of the statute has both a geographical and a distributive significance, that is it includes any portion of the United States and any one of the classes of things forming a part of interstate or foreign commerce.

Undoubtedly, the words "to monopolize" and "monopolize" as used in the section reach every act bringing about the prohibited results. The ambiguity, if any, is involved in determining what is intended by monopolize. But this ambiguity is readily dispelled in the light of the previous history of the law of restraint of trade to which we have referred and the indication which it gives of the practical evolution by which monopoly and the acts which produce the same result as monopoly, that is, an undue restraint of the course of trade, all came to be spoken of as, and to be indeed synonymous with, restraint of trade. In other words, having by the first section forbidden all means of monopolizing trade, that is, unduly restraining it by means of every contract, combination, etc., the second section sceks, if possible, to make the prohibitions of the act all the more complete and perfect by embracing all attempts to reach the end prohibited by the first section, that is, restraints of trade, by any attempt to monopolize, or monopolization thereof, even although the acts by which such results are attempted to be brought about or are brought about be not embraced within the general enumeration of the first section. And, of course, when the second section is thus harmonized with and made as it

was intended to be the complement of the first, it becomes obvious that the criteria to be resorted to in any given case for the purpose of ascertaining whether violations of the section have been committed, is the rule of reason guided by the established law and by the plain duty to enforce the prohibitions of the act and thus the public policy which its restrictions were obviously enacted to subserve. And it is worthy of observation, as we have previously remarked concerning the common law, that although the statute by the comprehensiveness of the enumerations embodied in both the first and second sections makes it certain that its purpose was to prevent undue restraints of every kind or nature, nevertheless by the omission of any direct prohibition against monopoly in the concrete it indicates a consciousness that the freedom of the individual right to contract when not unduly or improperly exercised was the most efficient means for the prevention of monopoly, since the operation of the centrifugal and centripetal forces resulting from the right to freely contract was the means by which monopoly would be inevitably prevented if no extraneous or sovereign power imposed it and no right to make unlawful contracts having a monopolistic tendency were permitted. In other words that freedom to contract was the essence of freedom from undue restraint on the right to contract.

Clear as it seems to us is the meaning of the provisions of the statute in the light of the review which we have made, nevertheless before definitively applying that meaning it behooves us to consider the contentions urged on one side or the other concerning the meaning of the statute, which, if maintained, would give to it, in some aspects a much wider and in every view at least a somewhat different significance. And to do this brings us to the second question which, at the outset, we have stated it was our purpose to consider and dispose of.

Second. The contentions of the parties as to the meaning of the statute and the decisions of this court relied upon concerning those contentions.

In substance, the propositions urged by the Government are reducible to this: That the language of the statute embraces every contract, combination, etc., in restraint of trade, and hence its text leaves no room for the exercise of judgment, but simply imposes the plain duty of applying its prohibitions to every case within its literal language. The error involved lies in assuming the matter to be decided. This is true because as the acts which may come under the classes stated in the first section and the restraint of trade to which that section applies are not specifically enumerated or defined, it is obvious that judgment must in every case be called into play in order to determine whether a particular act is embraced within the statutory classes, and whether if the act is within such classes its nature or effect causes it to be a restraint of trade within the intendment of the act. To hold to the contrary would require the conclusion cither that every contract, act or combination of any kind or nature, whether it operated a restraint on trade or not, was within the statute, and thus the statute would be destructive of all right to contract or agree or combine in any respect whatever as to subjects embraced in interstate trade or commerce, or if this conclusion were not reached, then the contention would require it to be held that as the statute did not define the things to which it related and excluded resort to the only means by which the acts to which it relates could be ascertained-the light of reason—the enforcement of the statute was impossible because of its uncertainty. The merely generic enumeration which the statute makes of the acts to which it refers and the absence of any definition of restraint of trade as used in the statute leaves room for but one conclusion, which is, that it was expressly designed not to unduly limit the appli

cation of the act by precise definition, but while clearly fixing a standard, that is, by defining the ulterior boundaries which could not be transgressed with impunity, to leave it to be determined by the light of reason, guided by the principles of law and the duty to apply and enforce the public policy embodied in the statute, in every given case whether any particular act or contract was within the contemplation of the statute.

But, it is said, persuasive as these views may be, they may not be here applied, because the previous decisions of this court have given to the statute a meaning which expressly excludes the construction which must result from the reasoning stated. The cases are United States v. Freight Association, 166 U. S. 290, and United States v. Joint Traffic Association, 171 U. S. 505. Both the cases involved the legality of combinations or associations of railroads engaged in interstate commerce for the purpose of controlling the conduct of the parties to the association or combination in many particulars. The association or combination was assailed in each case as being in violation of the statute. It was held that they were. It is undoubted that in the opinion in each case general language was made use of, which, when separated from its context, would justify the conclusion that it was decided that reason could not be resorted to for the purpose of determining whether the acts complained of were within the statute. It is, however, also true that the nature and character of the contract or agreement in each case was fully referred to and suggestions as to their unreasonableness pointed out in order to indicate that they were within the prohibitions of the statute. As the cases cannot by any possible conception be treated as authoritative without the certitude that reason was resorted to for the purpose of deciding them, it follows as a matter of course that it must have been held by the light of reason, since the conclusion could not have been otherwise reached, that the assailed