This is a petition for an assessment of damages to property, under the St. 1902, c. 543, § 2. The principal question relates to the right to set off benefits to the property, received from the improvement of the State House and the grounds adjacent thereto. The first section of the statute referred to limits the height of buildings, to be erected or rebuilt, abutting on Bowdoin Street between Allston Street and Beacon Street, to one hundred feet above the highest grade of that part of Bowdoin Street on which the building abuts, and limits the height of buildings to be erected on Beacon Street between the Claflin Building and Park Street to seventy feet above the highest grade of Beacon Street. The St. l901, c. 525, provided for a change of the grade of Bowdoin Street.
Section 2 of the act first mentioned is as follows : “ Any person owning land on or within forty-two feet of Bowdoin Street, between Allston Street and Beacon Street, or on or within ninety-five feet of Beacon Street between the Claflin Building, so-called, and Park Street, whose property is damaged more than it is benefited by the improvement of the State House, consisting of the limitation of the height of buildings on said land, the laying out and grading of said streets, the removal of buildings between Hancock Street and Bowdoin Street, the reconstruction and extension of the State House and the construction of the park between Bowdoin Street and the State House, may, within two years after the passage of this act, and not afterward, file in the office of the clerk of the Superior Court for the county of Suffolk, his petition for a jury to determine such damage, and a jury of said court shall thereupon determine the question, under the rules of law, so far as they are applicable, under which damages for the laying out of highways under the Revised Laws are determined. If the jury find that the petitioner is damaged more than he is benefited by said improvement they shall determine the amount of the difference, and the Commonwealth shall pay the same; and if the jury shall not so find, judgment shall be entered for the Commonwealth, costs taxed and execution issued therefor against the petitioner as in civil cases. The city of Boston shall repay to the Commonwealth all damages which the State shall be required to pay for the change of grade of Bowdoin Street made *476under authority of the Governor and Council, and for all expenses incurred in making such change.”
The controversy in the present case relates only to the damages claimed on account of the limitation of the height of buildings on Bovvdoin Street. About the damages found by the auditor and allowed by the court on account of the change of the grade of the street, no question is made by either party. The question is whether the damages for the limitation of the height of buildings are to be assessed as is provided by the statute, with .a deduction of the benefit received from the general improvement mentioned, or without any deduction.
There is no doubt as to the true meaning of the statute in this particular. The provision for the recovery of these damages is only for those whose property is damaged more than it is benefited by the improvement stated, of which this limitation of the height of buildings is treated as a part. The contention of the petitioner is that this statute is unconstitutional in prescribing a set-off of benefits against the damages other than the benefits that result under the statute which authorizes a taking. This contention includes the proposition that there is a taking of property under the right of eminent domain, as well as the proposition that the compensation cannot be diminished by such a set-off as is prescribed.
It was decided in Welch v. Swasey, ante, 364, that Sts. 1904, c. 333, and 1905, c. 383, and the orders of the commissioners under them which limit the height of buildings in all parts of the city of Boston, without compensation to property owners, are constitutional. The limitation prescribed for buildings on this street in the statute now before us is no greater than under the statute just mentioned for buildings in most parts of the city of Boston, and it is no greater than that prescribed for buildings in places where the reasons for enforcing such a limitation, in the exercise of the police power, are but little if any moré cogent than they are for such a limitation here. If the Legislature had put this restriction upon the erection of buildings in a statute dealing with such property generally, in the exercise of the police power, without providing compensation, we should think it plain that the statute would have been constitutional.
*477By the St. 1901, c. 525, § 3, precisely the same restriction was put upon the height of buildings on this street that we find in the St. 1902, c. 543, and there was no provision for compensation. The inference is strong that the Legislature intended this part of that statute as an exercise of the police power, and not a taking of property under the right of eminent domain. It is only upon this assumption that the constitutionality of the provision in that act can be upheld. The Legislature is presumed to have proceeded under the Constitution, rather than in violation of it. On the other hand, there are considerations that might be urged with much force against the contention that this part of that statute was enacted in the exercise of the police power. It is entitled, “ An Act relative to the improvement of the State House grounds.” It deals with the height of buildings only in a small area very near the State House, when considerations relative to the public health, the public safety and the public comfort would be equally applicable to other parts of the city.
If the provision in the St. 1901, c. 525, was enacted as an exercise of the police power, the natural construction of the provision for damages, in the section above quoted, would be, that it was made broad enough to include every kind of detriment on one side, even though the landowner might not be entitled to damages for it under the constitution, and in like manner to include all benefits from the general improvement on the other, and to give the owner the balance, if the damages exceeded the benefits.
If, on the other hand, the limitation is to be treated as a taking of property under the right of eminent domain, the owner is entitled to compensation if the right taken is of any value. Of course, compensation is to be measured by the effect of the taking, for the public use referred to in the statute, upon the value of the property, having reference to the effect of the taking for the prescribed use upon the property that is left, as well as to the value of the right taken, considered by itself alone. The statute shows that the restriction upon the height of buildings on Bowdoin Street was treated by the Legislature as a part of the general improvement of the State House and the grounds about it, which had been begun several years before, *478and was then unfinished. It is a grave question whether, by-treating these changes made under different statutes as one general improvement, and providing that this restriction upon buildings should be a part of the improvement, the Legislature could limit compensation for a right of property taken to its value diminished by the. value of the benefit received by the remaining estate from the general improvement.
We do not find it necessary to decide these questions in this case, for the petition is brought under the section above quoted, and unless that section is valid, the petitioner has no standing before the court. The petitioner is described in the petition as one whose property is damaged “ more than it is benefited by the improvement of the State House, consisting of the limitation of the height of buildings on said land, the laying out and grading of said streets, the removal of buildings between Hancock Street and Bowdoin Street, the reconstruction and extension of the State House and the construction of the park between Bowdoin Street and the State House ; ” and it “prays that the damages which it has sustained as aforesaid may be assessed by a jury of this honorable court as provided in said acts and amendments thereto.” The only jurisdiction to which the petitioner appeals is the jurisdiction created by this section. The only damages which the petitioner asks to have assessed are the damages given by this section. The assessment made by the auditor and .confirmed by the court was in accordance with the terms of this section. In this proceeding the petitioner is estopped from questioning the validity of this section, upon which alone its petition is founded. Daniels v. Tearney, 102 U. S. 415. Davis v. Wakelee, 156 U. S. 680. By bringing the petition it has affirmed the validity of the taking and of the provision for giving damages contained in this section. The respondent has conceded the validity of both. There is no issue before the court as to the constitutionality of the taking, or of the method provided for the assessment of damages. See Wellington, petitioner, 16 Pick. 87, 97; Hingham & Quincy Bridge v. County of Norfolk, 6 Allen, 353, 357.
The petitioner refers to the familiar rule of law that unconstitutional provisions of a statute are sometimes separable, leaving the act constitutional and valid in one part and unconstitutional *479in another part. White v. Gove, 183 Mass. 333. Edwards v. Bruorton, 184 Mass. 529. This rule is not applicable to the present case because, first, the petition is founded on the part of the statute which is alleged to be unconstitutional, and secondly, because the different parts of the act relating to the height of buildings in Bowdoin Street and the assessment of damages are so connected that they do not seem to be separable. Judging from the provisions of the statute, it cannot be assumed that the Legislature would have passed the first section if it had understood that the second could not be given effect. ■
There is nothing in the case to take it out of the general rule as to the allowance of interest upon damages suffered.
Judgment according to the finding and ruling of the Superior Court.