OPINION,
Mr. Chief Justice Paxson:The learned court below gave no reason for striking off the lien beyond this, that “ the depot and roadbed of a railroad company are not the subjects of a municipal lien.” The claim was for paving the footway in front of defendant’s lot. The latter was described as follows :
“ The said lot of land is situate in said borough on the south side of Main street, and extends along said street a distance of about 300 feet, and is more particularly bounded and described as follows, to wit: All that lot of ground situate in the borough of Mt. Pleasant, bounded and described as follows: On the north by Main street; on the east by Depot street; on the *371south by lot of Zack Tyson; and on the west by land of Pennsylvania Railroad Company; containing about one and a half acres, and occupied by the Baltimore & Ohio Railroad Company with depot, freight depot, and lumber yard.”
It is settled that a municipal claim for paving cannot be filed against the roadbed, or that narrow strip of ground which forms the right of way of a railroad: Philadelphia v. Railroad Co., 83 Pa. 41; Junction R. Co. v. Philadelphia, 88 Pa. 424. The concluding sentence of the opinion in the case last cited is as follows: “I have confined the discussion of this case to the matter of the roadbed. The question of the liability of other. real estate of such corporations, such as depots, offices, shops, and the like, to taxation and municipal assessments, is not raised by the record.” It is not necessary to reconsider and discuss the reasons which exempt the roadbed from municipal assessments; nor is it needed that we do more than refer in a general way to West Chester Gas Co. v. Chester Co., 30 Pa. 232, in which it was held that the works of an incorporated gas company are not liable to taxation as real estate, for state and county purposes. This was followed by a line of cases in which the same doctrine is declared. The reason for this rule is that such property is already taxed in another form, and the legislature will not be presumed to have intended double taxation, in the absence of express language to that effect. Those decisions, however, do not go further than to say that such property is exempt from general taxation, that is, for state and county purposes. Nor do they go to the extent of exempting all real estate owned by a corporation; they apply only to such as is necessary to the proper performance of the company’s work. Thus, in the case cited, dwelling-houses, erected for the accommodation of the company’s workmen, were held to be a convenience merely, and were not exempted.
But municipal assessments differ from general taxation in many respects. The latter is the imposition of a duty or impost for the support of the government. In that sense, it is understood all the world over as contradistinguished from a mere municipal charge for the improvement of property within the municipal bounds. Hence it was held in Pray v. Northern Liberties, 31 Pa. 69, that a municipal claim for paving, etc., was not a tax within the meaning of the act of February 3, *3721824, and need not be registered in tlie office of tbe county commissioners. This was directly in the line of Northern Liberties v. St. John’s Church, 18 Pa. 104, where it was held that the church was not exempt from a charge for laying water-pipes, by reason of the act of April 16,1838, exempting churches and burial grounds from taxes. While a rhunicipal assessment for paving, etc., is a species of taxation, and is the exercise of the taxing power of the commonwealth, conferred to a limited extent upon such corporations, yet it differs essentially from general taxation. “Local assessments can only be constitutional when imposed to pay for local improvements clearly conferring special benefits on the properties'assessed, and to the extent of those benefits. They cannot be imposed when the improvement is either expressed or appears to be for general public benefit:” Hammett v. Philadelphia, 65 Pa. 150. It requires no argument to show that the paving of a footway by the side of a railroad track can confer no possible benefit upon the property known as the right of way; hence, the whole theory which justifies such charges fails in this instance.
But this reason does not apply to a railroad station where passengers assemble to take the trains; much less does it apply to ground used as a freight station or a lumber yard. It is as important to have a well-paved walk to reach a railroad station as it is to any other place, and I have noticed, as a general rule, that railroad companies are in advance of the general public in all that regards comfortable and safe approaches to their stations. The regulation of the' sidewalks of a borough is a part of its police power. It was accordingly held in Wilkinsburg Bor. y. Home, 131 Pa. 109, that the defendant, although a charitable institution, and its estates and property exempt from taxation, was nevertheless bound to conform to the borough law of 1851, in respect to the pavement in front of its real estate, and having permitted the same to become a nuisance, was obliged to repair it when required by the borough authorities. It was said in that case: “ The defendant contends that this footwalk comes within the reason of the case cited, Olive Cemetery Co. v. Philadelphia, 93 Pa. 129, and that the charge for its construction is also a species of local taxation. We think there is a marked distinction between the two cases. In that of borough footwalks, the owners of property are required by law to *373keep their footways in repair, and, if necessary, to re-lay them. This is a duty imposed directly upon the property owner, and is in the nature of a police regulation. It is no more a tax, or a municipal assessment in the nature of a tax, than would be the imposition of any other duty by virtue of the police powers of the borough, with a penalty for its violation. This footway was a public nuisance, dangerous in its character; and the fact that the defendant is a charity, and exempt from taxation, does not authorize it to maintain a nuisance. It could be required to abate it precisely as in the case of any other corporation or individual.” We are of opinion that, while the roadbed or right of way of a railroad company is not the subject of a claim for paving, it does not follow that a passenger or freight depot, the ground belonging to the company and used as a lumber yard or other purpose, may not be subjected to such a charge. The learned judge below has assumed that this claim was filed against the roadbed. This does not appear from the face of the claim as filed, except inferentially. Should it appear upon the trial below that in point of fact it does cover the right of way, it cannot of course be sustained; at least, so much of it as covers the roadbed. We will therefore defer any further discussion of this branch of the case, until we are more fully possessed of the facts.
While the learned judge gave but a single reason for striking off the lien, a number of others were assigned in support of the motion. The most important is the second, which is as follows : “ It does not appear upon the face of said lien that a demand was made upon, or a proper notice given to the defendant company by the borough authorities, to perform the work for which said alleged lien was filed, and that defendant refused or neglected to perform said work after due notice given.” The authority on which the borough acted is to be found in the second section of the act of April 3, 1851, P. L. 320, commonly known as the borough act. The portion of said section to which I refer is as follows:
“ Y. To require and direct the grading, curbing, paving, and guttering of the side or footwalks, by the owner or owners of the lots of ground respectively fronting thereon, in accordance with the general regulations prescribed.
“ YI. To cause the same to be done on failure of the owners *374thereof, within the time prescribed by the general regulations, and to collect the cost of the work and materials with twenty per centum advance thereon from said owners, as claims are by law recoverable under the provisions of the law relative to mechanics’ liens; and the particulars of such labor and materials, the name or names of the actual or reputed owner or owners, as also of the occupier or occupiers of the premises for the time being, shall be set forth in a statement to be filed within thirty days after such expense shall have been incurred.”
It is clear that a demand and refusal are essential to sustain a claim under this act. The question is, whether it is necessary to aver such demand and refusal in the claim itself. I would have no hesitation in saying that it was, but for the last clause of the section which prescribes what the claim shall set forth. It requires that the borough shall state therein, (a) the particulars of such labor and materials; (5) the name or names of the actual or reputed owner or owners; and (e) the name or names of the occupier or occupiers of the premises for the time being. The statute having defined the requisites of the lien, we cannot add to them by implication, and the maxim, expres-sio unius est exclusio alterius, applies. It was urged, however, that Connellsville Bor. v. Gilmore, 15 W. N. 84B, rules that the claim must contain an averment of notice to the owner, and a refusal to comply therewith. The claim in that case was for the removal of a nuisance, and was defective in several respects. It is true, we held that one of those defects was the absence of an averment of notice to the owner to remove the alleged nuisance, and a refusal to comply therewith. The section of the borough act authorizing a borough to prohibit and remove nuisances is in many respects similar to the one in regard to paving, but it does not prescribe any of the requisites of .the claim to be filed under it. There is a marked distinction between the paving of a street and the removal of a nuisance. The former is done under general regulations, prescribed by the borough and known generally to the citizen's. In point of fact, the owner of a sidewalk, as a general rule, knows when his sidewalk gets out of repair. He further knows that it is his duty to repair or re-pave it, while, in the case of a nuisance upon his premises, he may or may not know of its existence. It may be cast upon his lot without his knowledge, *375as in the ease of a dead animal, or he may not regard as a nuisance what the borough authorities pronounce to be such ; hence, it would be manifestly unjust for the borough to charge him, not only with the cost of removal, but also with twenty per cent in addition thereto, without first having called upon him to remove the same. And, as the borough has no right to collect either the cost or the penalty without a previous demand and refusal, there appears to be no reason why such demand and refusal should not appear in such cases in the claim filed. As was said in Connellsville Bor. v. Gilmore, supra: “ Such demand, being a prerequisite, should have been averred in the claim.”
It is well to observe that our decisions upon the questions arising out of street improvements in the city of Philadelphia have little application to cases arising under the borough act. That city has a system of its own, complete in itself, and, as was said in Philadelphia v. Richards, 124 Pa., at page 310, “ in regard to paving, and to other municipal improvements, the authority of the city of Philadelphia is general and unlimited, both to do the work and to file claims against property owners for the cost of it,” etc.
We are also of opinion that the proposed amendment of the lien should have been allowed, under the authority of Philadelphia v. Stevenson, 132 Pa. 103.
The order of the court below striking off the lien is reversed; the lien reinstated, the amendment allowed, and a procedendo awarded.