Owen, J.

Appellant contends that the record contains no competent evidence of the true value of the assessable property of the towns of Commonwealth, Florence, and Niagara other than that of the property of the plaintiff, and that, consequently, there was no competent evidence upon which the court could determine the ratio' existing between the assessed value and the true value of the assessable property in said towns outside the property owned by the plaintiff. The'evidence in this behalf consisted of reports made by the assessors of incomes of the counties of Florence and Marinette. Sec. 7(775, Stats., requires the assessor of incomes to make a report to the county board of each county within his assessment district showing in detail the work of local assessors in their several districts, the failure, if any, of such assessors or property owners to comply with the law, the relative assessed and true value of property in each local assessment district, and all such information and statistics as he may obtain which will be of assistance to the county •board in determining the relative value of all taxable property in each town, city, and village in the county. Such report shall be filed with the county clerk at least fifteen days *234before the annual meeting of the county board. Not less than six copies -of such printed report, together with all statistics accompanying the same, shall be filed with the State Tax Commission. By sec. 327.10, Stats., it is provided:

“When a public officer is required or authorized by law to make a certificate or affidavit touching an act performed by him or to a fact ascertained by him in the course of his official duty and to file or deposit it in a public office such certificate or affidavit when so filed or deposited shall be received as presumptive evidence of the facts therein stated unless its effect is declared by some special provision of law.”

The report made by the income tax assessor pursuant to law is equivalent to his certificate. The statute requires that the report shall show “the relative assessed and true value of property in each local assessment district.” This is a fact which the law requires shall be ascertained by him. It would seem to follow that by virtue of sec. 327.10’ the report of the income tax assessor constitutes presumptive evidence of the “relative assessed and true value of property in each local assessment district.” However, it is also the law that the assessment made by the local assessor is prima facie correct. State ex rel. Miller v. Thompson, 151 Wis. 184, 138 N. W. 628; State ex rel. Kimberly-Clark Co. v. Williams, 160 Wis. 648, 152 N. W. 450. The court, therefore, had before it the valuation of property in each town made by the local assessor. The law (sec. 70.32 and sec. 70.34) requires the assessor to value the assessable property of the town at its true cash value, and his valuation is prima facie correct. The law requires the assessor of incomes to ascertain “the relative assessed and true value, of property in each local assessment district,” and his report thereon is presumptive evidence of the facts therein stated. Upon such a record, where is the weight of the evidence ?

*235While the law requires local assessors to assess the property of their respective assessment districts at its true cash value, it has long been a matter of common knowledge that they do not do so. This practice has aggravated taxation evils, and in late years efforts have been made to encourage a more faithful observance of the law in this respect on the part of local assessors. Whether this was the controlling reason for the creation of the Tax Commission, it has always been regarded as an evil which it was a part of the duty of the Tax Commission to correct. Supervisory and reviewing powers in numerous respects over local assessments have been conferred upon the Tax Commission. It has been the continuous effort of that body not only by an exercise of its various powers of supervision and review over local assessments, but in its public reports and preach-ments, to promote more faithful assessments. The Tax Commission is the supreme administrative body of the state with reference to matters of assessment and taxation.

The assessors of incomes are appointed by the State Tax Commission. They are under the direction'and control of the State Tax Commission, “and shall make such reports to the commission, to the county board of review and the county board of supervisors, and perform such other duties, as the commission shall direct.” Sec. 71.07, Stats. By sec. 70.75 (2), Stats., it is provided that “The assessor of incomes shall have access to all public records, books, papers and offices throughout his district and shall make a full and complete examination of them and investigate all other matters and subjects relative to the assessment and taxation of property in the several toy/ns, villages and cities contained therein; and for that purpose he shall visit each such town, village and city as often as may be necessary during each year.” And by sub. (3) of said sec. 70.75 it is provided that “The assessor of incomes shall examine and test *236the work of assessors during the progress of their assessments and ascertain whether any of them is assessing property at other than full value dr is omitting property subject to taxation from the roll.”

Many other provisions of the statutes might he cited to indicate that the assessor of incomes is superior the local assessor and is accorded higher rank and dignity by the law. He is a sort of field man for the Tax Commission — an intermediary between the Tax Commission and the local assessing officers. His findings are presumed by the very scheme of the law to be more profound, more scientific, and more accurate than those of the local assessor. But it is said that his conclusions are not founded upon the same intimate knowledge which the assessor possesses with reference to each specific piece of property in his assessment district. It is true that the assessor is required to view the property which he assesses. It is also true that this is quite impracticable on the part of the assessor of incomes. It may be conceded also that if the assessor proceeded with the same fidelity to the requirements of the law that governs the assessor of incomes, his conclusions might be more accurate than those of the assessor of incomes. But. the law really proceeds on the theory that the assessor may not be faithful to the mandate of the statute in assessing property at its full cash value, and the assessor of incomes'is required to test the assessment.of the various assessors in his district. How does he do this ?

We find an explanation of the method followed in the testimony of Judge Rosa, a member of the State Tax Commission, in this case. The assessor of incomes takes note of the records to be found in the office of the register of deeds. These records inform him of the various sales of real estate made throughout the county. By taking note of the consideration mentioned in the deed, and by verifying such consideration, he ascertains the actual sale value of the land. He then compares the actual sales value with the *237.assessed value. By numerous like comparisons he is enabled to arrive at a conclusion as to whether the assessor of a given town is making a bona fide effort to assess the property of his town at its true value, and, if not, a fairly correct conclusion as to the ratio obtaining between the assessed and the true value of property in that town. .It should be said that the information received in this manner by the assessor of incomes is supplemented by information of every other nature and description which he is enabled to gather in his various contacts and associations with the assessing officers and taxpayers throughout his district'. The conclusions thus arrived at are given great sanctity by the law of this state. The methods followed are those employed by the State Tax Commission in assessing the prop- ' erty of the state pursuant to the express command of the legislature. The Tax Commission is required to assess the •property of the various railway companies of the state. To that assessment the average rate of taxation prevailing .throughout the state,- based upon the true value of the assessable property in the state, is applied, and the tax is paid by the railway companies into the state treasury. It will be observed that in order to bring about an equality of taxation the rate must be determined by taking the true value father than the assessed value of the assessable property of the state. In order to obtain, that true value, sec. 76.09, Stats., provides that the Commission, “from the information obtained pursuant to section 70.57, and upon all the evidence, proofs, statistics and information obtainable from all available sources, shall according to their best knowledge and judgment, ascertain and determine the true cash value of all general property of the state liable to state, county and local taxes in the then present year, and shall enter upon its records the aggregate true cash value of such property.” For the purpose of apportioning the state taxes, the Commission is required by sec. 70.57 to “determine and assess the relative value of all property subject to taxation in each county.” *238By sec. 68.04 it is made the duty of the Commission “to collect from time to time statistics of recorded sales of real estate in each county and of the assessed valuation of the lands included in such sales.”

It can readily be appreciated that the Tax Commission cannot view all of the taxable property of the state, and the determinations made by it of the true value of the taxable property of the state must be made in some other way. Naturally they take the various assessment? made by the various local assessors as a base, and to that they apply the ratio of assessed valuation to true valuation as they have found it to be by a comparison of the assessed valuation with the actual sales value ascertained in the manner above indicated plus such other knowledge or information as they have been able to ascertain from any source. It is safe to say, however, that the comparison of the assessed value with the sales value furnishes them the most important source of the information upon which their conclusions rest. To say that conclusions arrived at in this way are not of greater dignity, and that such methods followed by men experienced in taxation matters do no't lead to more dependable and accurate conclusions, is to say that the work of the Tax Commission rests upon the sands and the result has no more stability than a house of cards. It would be to set at naught the carefully constructed machinery to bring about more just results in the administration of our taxation laws. Such methods have the sanction of the law and their fruits abundantly attest their potency. These considerations would seem to demonstrate that the findings of the income tax assessor are to be exalted far above the assessment made by the local assessor, and that, where the two conflict, the law accords to the findings of the income tax assessor a weight and dignity that far outweighs the assessment made by the local assessor. We must conclude that there was sufficient evidence to sustain the findings of the trial court.

*239It does not follow, however, that the findings of the trial court justify the judgment rendered. By sec. 76.48 the Tax Commission is required to assess the property of a public utility extending into two or more assessment districts and to certify to each assessment district the proportion of the assessed valuation belonging to each. The valuation so assessed is then placed upon the tax roll of the respective assessment districts and to it the rate of taxation prevailing in that municipality is applied. In assessing these utilities the Tax Commission was bound by the same rule that governs local assessors, requiring them to .assess property at its full cash value. No taxpayer can set aside such an assessment. Neither can the court command the Tax Commission to make a different assessment. The statute did not permit the Tax Commission to make an assessment which shall be proportionate to the assessed valuation of the other property in the various towns. The statute then existing proceeded upon the theory that all property was assessed at its true cash value, and hence utility properties such as that owned by the plaintiff must be assessed at their true cash value. While the statute gave the right of appeal as herein exercised, the issues which may be raised upon such appeal were whether the Commission properly valued the ■property or whether it properly certified to each assessment district the proportion of the assessed valuation of such property belonging to each such assessment district. The plaintiff does not complain that its property was assessed at more than its actual cash value. The complaint is confined wholly to the proposition that its property was assessed higher in proportion than other property in the town, and hence it was required to pay moré than its just proportion of the taxes. Similar complaints have been made by taxpayers from a very early day. The remedy for such a situation has always been a reassessment. It has never been considered the proper function of a court to fix the *240amount of taxes which a taxpayer should pay under such circumstances, or to make a judicial assessment of his property. It was provided by sec. 1210b, Sanborn & Berryman’s Statutes of 1898, that where such a situation developed in any action brought to avoid or set aside in whole or in part any assessment, the court should immediately stay all proceedings in such action until a reassessment of the property of the district could be made. Marsh v. Board of Supervisors, 42 Wis. 502; Flanders v. Merrimack, 48 Wis. 567, 4 N. W. 741; Single v. Stettin, 49 Wis. 645, 6 N. W. 312. This is still the law of this state. Sec. 75.54, Stats. The relief to which plaintiff was entitled at the time the action was begun could have been ascertained only by a reassessment provided by sec. 75.54. By ch. 436 of the Laws of 1925, however, sec. 76.48 has been amended by adding a provision that “the tax commission shall have power to equalize the assessments provided for in section 76.47 with the assessments of real and personal property in such assessment district.” In view of this provision of the statute, it being remedial in nature, the trial court should stay proceedings and direct the Tax Commission to proceed under this provision of the statutes and equalize the assessment of plaintiff’s property with theother property of the respective towns in which it is located. It should be remarked, however, that some evidence was excluded by the trial court tending to show that a short time after the assessment of plaintiff’s property here in question the property was sold for a substantially greater amount than that at which it was assessed. In equalizing the assessment the Tax Commission no doubt has the power to correct any mistake it made in the valuation of plaintiff’s property and to bring about a result that will be just and equitable upon the facts as. they actually existed.

By the Court. — Judgment reversed, and cause remanded for further proceedings in accordance with this opinion.

Rosenberry and Stevens, JJ., took no part.