delivered the opinion of the court.
This was a complaint against the plaintiff in error for refusing to sell tickets for the transportation of pupils to and from' the public schools at one-half the regular fare charged by it, as required by Mass. Rev. Laws, c. 112, § 72. At. the trial the Railway Company admitted the fact, but set up that the statute was unconstitutional, in that it denied to the company the equal protection of the laws and deprived it of its property without just compensation and without due process of law. In support of -this defence it made an offer of proof which may be abridged into the propositions that the regular fare was five cents; that during the last fiscal year the actual and reasonable cost of transportation per passenger was 3.86 cents, or, including taxes, 4.10 cents; that pupils of the public schools formed a considerable part of the passengers carried by it, and that -the one street railway expressly exempted by the law transported nearly óne-half the passengers transported on street railways and received nearly one-half the revenue received for such transportation in the Commonwealth. The offer was stated to be made for the purpose of showing that the plaintiff in error could not comply with the statute without carrying passengers for less than a reasonable compensation *84 and for less than cost. The offer of proof was rejected, and a ruling that the statute was repugnant to the Fourteenth Amendment was refused. The plaintiff in'error excepted and, after a verdict of guilty and sentence, took the case to the Supreme Judicial Court. 187 Massachusetts, 436. That Court overruled the exceptions, whereupon the plaintiff in error brought the . case here.
This court is of opinion that the decision below was right. A majority of the court considers that the case is disposed of by the fact that the statute in question was in force when the plaintiff in error took its charter, and confines itself to that ground. The section of the Revised Laws (c. 112, § 72), was a continuation of St. 1900, c. 197. Rev. Laws, c. 226, § 2.
Commonwealth
v.
Anselvich,
186 Massachusetts, 376, 379, 380. The act of incorporation went into effect March 15, 1901. St. 1901, c. 159. By the latter act the plaintiff in error was “subject to all the duties, liabilities and restrictions set forth n all general laws now or hereafter in force relating to street railway companies, except,” etc. § 1. See also § 2. There is no doubt that,- by the law as understood in Massachusetts, at least, the provisions of Rev. L. c. 112, § 72, St. 1900, c. 197, if they had been inserted in the charter in terms, would have bound the corporation, whether such requirements could be made constitutionally of an already existing corporation or not. The railroad company would have come into being and have consented to come into being subject to the liability and could not be heard to complain.
Rockport Water Co.
v.
Rockport,
161 Massachusetts, 279;
Ashley
v.
Ryan,
If the charter, instead of writing out the requirements of Rev. L. 112, § 72, referred, specifically to another document expressing them, and purported to incorporate it, of course the charter would have the same effect as if it itself contained the words. If the document was identified, it would not matter what its owp. nature or effect might be, as the force given to it
*85
by reference and incorporation would be derived wholly from the charter. The document, therefore, might as well be an unconstitutional as a constitutional law. See
Commonwealth
v.
Melville,
160 Massachusetts, 307, 308. But the contents of a document may be incorporated or adopted as well by generic as by specific reference, if only the purport of the adopting statute is clear.
Corry
v.
Baltimore,
Speaking for myself alone, I think that there are considerations on the other side from the foregoing argument that make it unsafe not to discuss the validity of the regulation apart from the supposition that the plaintiff in error has accepted it. See
W. W. Cargill Co.
v.
Minnesota,
The discrimination alleged is the express exception-from the act of 1900 of the Boston Elevated Railway Company and the railways then owned, leased or operated by it. But, in the first place, this was a legislative adjudication'concerning a specific road, as in
Wight
v.
Davidson,
The objection that seems to me, as it seerqed to the court below, most serious is that the statute unjustifiably appropriates the property of the plaintiff in error. It is hard to say that street railway companies ■ are not subjected to a loss. The conventional fare of five cents presumably is not more than a reasonable fare, and it is at least questionable whether street railway companies would- be permitted to increase it on the-ground of this burden. If is assumed by the statute in question that the ordinary fare may be charged for these children or some of them when not going to or from school. Whatever the fare, the statute fairly construed means that children going to or from school must be carried for half the sum that would be. reasonable compensation for their carriage, if we looked only to the business aspect of the question. Moreover, while it may be true that in some cases rates or fares may be reduced to an unprofitable point in view of the business as a whole or upon special considerations,
Minneapolis & St. Louis R. R. Co.
v.
Minnesota,
Notwithstanding the foregoing considerations I hesitatingly agree with the state court that the requirement may be justified under what commonly is called the police power. The obverse way of stating this power in the sense in which I am using the phrase would be that constitutional rights like others
*87
are matters of degree and that the great constitutional provisions for the protection of property are not to be pushed to a logical extreme, but must be taken to permit the infliction of some fractional and relatively small losses without compensation, for some at least of the purposes of wholesome legislation.
Martin
v.
District of Columbia,
If the Fourteenth Amendment is not to be a greater hamper upon the established practices of the States in common with other governments than I think was intended, they must be allowed a certain latitude in the minor adjustments of life, even though by their, action the burdens of a part of the community are somewhat increased. The traditions and habits of centuries were not intended to be overthrown when that amendment was passed.
Education is one of the purposes for which what is called the police power may be exercised.
Barbier
v.
Connolly,
Thus the question narrows itself to the magnitude of the burden imposed—to whether the tax is so great as to exceed
*88
the limits of the police power. Looking at the law without regard to its special' operation -I should hesitate to assume that its total effect, direct and indirect, upon the roads outside of Boston amounted to a more serious burden than a change •in the law of nuisance, for example, might be. See further,
Williams
v.
Parker,
is of opinion that the constitutionality of the act of 1900 is necessarily involved in the 'determination of this case. He thinks the act is not liable to the Objection that it denies to the railway company the equal protection of the laws. Nor does he think that it can be held, upon any showing made by this record, to be unconstitutional as depriving the plaintiff in. error of its property without due process of law. Upon these grounds alone, and independent of any otüer question discussed, he joins in a judgment of affirmance.
Judgment affirmed.
