DIGGES, J., delivered the opinion of the Court.

The only exception in this record is to the action of the trial court on the prayers. The appellant is a Maryland corporation engaged in the business of meat packing, the slaughter of food animals, the preparation of their carcasses for human consumption, and the manufacture of the by-products into useful commodities. Its plant is located in the territory which was annexed to Baltimore City by chapter 82 of the Acts of 1918. By section 10 of that act, among other things, it is provided:

"And provided, further, that all personal property of every description, owned by any person, firm or corporation and used entirely or chiefly in connection with manufacturing, in the territory annexed by this Act to Baltimore City, including mechanical tools, or implements, whether worked by hand or steam or other motive power, machinery, manufacturing apparatus or engines, raw material on hand, manufactured products in the hands of the manufacturer, bills receivable and business credits of every kind, due to the manufacturer, for goods manufactured in Baltimore City shall be exempt from taxation for all ordinary municipal purposes."

The appellant made its annual return for the year 1921 to the State Tax Commission on or about the 1st day of March, 1921, to which return there was attached a copy of the balance sheet of the defendant as of December 31, 1920. Contained in this balance sheet were the following:

The two questions presented by the ruling of the lower court on the prayers, contained in the single exception in the record, are: First, is the appellant permitted to attack the validity of the assessment in this case in a proceeding instituted by the city for the collection of the unpaid taxes? and, second, is the property, upon which the assessment was made and the taxes attempted to be collected, exempt from taxation by virtue of the provisions of the Act of 1918, chapter 82?

In the view which we take of the case, it is only necessary to consider the first of these propositions, namely, Can the appellant question the validity of the assessment of the property in question in these proceedings? The appellant here is an ordinary business corporation, incorporated under the laws of the State of Maryland and operating in this state. Section 108 of article 23 of the Code provides:

"Every ordinary business corporation shall be subject to taxation upon its property, real and personal, which would be taxable in this state if such corporation were a natural person engaged in a similar business, and the taxes thereon shall be levied, assessed and collectible in the following manner and not otherwise: On all real property the taxes shall be levied and assessed, and shall be payable at its situs, as now provided by law. All personal property of such corporations, exclusive of bonds, shares of stock and securities as enumerated in article 81, section 225, of the Annotated Code and property which by law is exempt from taxation, and exclusive of manufacturing plants situated in any city or county in which by law or ordinance manufacturing plants are exempt from county or municipal taxation shall be valued and assessed by the State Tax Commission and when so valued, the whole personal assessments shall be apportioned between the several counties and the cities of this state by the State Tax Commission in the proportion which the number of shares of stock of such corporation held by residents of each county or city of this state bears to the total number of shares of stock of such corporation outstanding, * * * and after such apportionment, valuation and assessment the State Tax Commission shall certify and return the amount of the said valuation and assessment to the Comptroller of the Treasury, who shall at once proceed to collect the amount of state taxes chargeable thereon, * * * and the county and municipal taxes on such valuation and assessment shall be payable by such corporations to the officers authorized to collect the county and municipal taxes at the residence of such stockholders at the tax rate fixed by the county, city or municipality at the residence of such stockholders."

Section 256 of article 81 of the Annotated Code of 1924 provides:

"That State Tax Commission shall adopt a seal and shall keep a full record of its proceedings, and have the power to make rules, orders and directions as it may deem necessary to carry into effect the objects of this sub-title. It shall have power also to provide a system for hearings on petitions filed before it, and shall adopt such rules of proceedings, manner of taking testimony and argument and such regulations in regard to notices of assessment, hearings and appeals as it may deem proper."

Section 253 of the same article provides:

"There shall be an appeal to court on questions of law only from decisions of the State Tax Commission to the court in that county where the property is situated, if real estate or tangible personal property, or where the owner resides, if intangible personal property, and the State Tax Commission is empowered to participate in any proceeding in any court wherein any assessment or taxation question is involved."

Section 259 of that article provides:

"Appeals from any action of the State Tax Commission to court, as authorized by section 253 hereof, shall be taken within thirty days of such action by petition setting forth the question or questions of law which it is desired by the appellant to review, and notice thereof shall be given by summons or subpoena, duly served on all parties directly in interest, by the sheriff of the county or city in which said appeal is filed, and shall be heard and decided by the court, sitting without a jury. All appeals to court in Baltimore City shall be to the Baltimore City Court, and there shall be a further right of appeal to the Court of Appeals from any decision of the Baltimore City Court or of the circuit courts of the several counties. Such appeals must be taken within ten days of the final judgment or determination of the lower court. The power to assess shall in all cases include the power to classify for taxation, and the power to review an assessment on appeal shall in all cases include also the power to review any question of classification for taxation."

It will be seen from the provisions of the statute above quoted that the State Tax Commission is given exclusive power and authority to assess the personal property of an ordinary business corporation; also that it has power and authority to adopt such rules and regulations in regard to notices of assessment, hearings and appeals as it may deem proper, the only limitation being that the notice given to the taxpayer afford him reasonable and proper time to protest the assessment. The time given in this case was ten days, which apparently is the usual time inserted in notices to taxpayers where the assessment has been made by the commission, and which affords the taxpayer ample time to make protest to the State Tax Commission against the assessment as made. If the protest is based upon an alleged erroneous finding of fact by the commission, the review is limited to that body; if, however, the correctness of the assessment depends upon a question of law, the statute provides for an appeal from the decision of the State Tax Commission to the Baltimore City Court or the circuit courts for the counties, as the case may be, dependent upon the situs of the property involved; and a further appeal from the decision of those courts to the Court of Appeals. The appellant here did not protest the assessment of this personal property, after having been notified by the State Tax Commission of its being made; neither did it appeal from that body to the Baltimore City Court within thirty days, the time prescribed by the statute. It did nothing from the time it received notice of the assessment, with the warning to protest within ten days or else same would be final, until suit was instituted for the collection of the taxes. It now comes in, by way of defense to that suit, and for the first time alleges that the property assessed was exempt under the provisions of the Act of 1918, ch. 82, hereinabove quoted. The case relied on by the appellant in support of its present position is Carroll County v. Shriver Co., 146 Md. 412. It is contended that in the decision reached by this Court in that case, it was necessary to determine the question here involved, and that it was determined in favor of the contentions now made by the appellant, as shown by the conclusion therein reached. The Court in that case, speaking through Judge Pattison, does not deal with the question here involved. Chapter 528 of the Acts of 1914, which was an act to encourage the development of manufacturing industry in the State of Maryland, by providing exemption from taxation of the tools, machinery, manufacturing implements, and engines, of corporations, firms, and individuals actually engaged in manufacturing, provided that it should become effective whenever the county commissioners of any county, by resolution, should so determine. The County Commissioners of Carroll County, by proper resolutions, determined that in furtherance of the said act, all tools, machinery, etc., of corporations, firms, etc., actually engaged in manufacturing should be thereafter exempt from taxation in Carroll County, Maryland. Subsequently, after a change in the personnel of the board of county commissioners, the latter board undertook to rescind the resolution and thereafter make the personal property, theretofore exempt, subject to taxation. The latter action was certified to the State Tax Commission, and the commission assessed the personal property of the Shriver Company which had theretofore been exempt under the first resolution, and upon the failure to pay the tax the county brought suit for the collection of the tax. This suit was defended by the Shriver Company on the ground that the county commissioners had no authority to pass the rescinding resolution, and that such resolution was nugatory in its effect. This Court decided that the Legislature, by the Act of 1914, ch. 528, provided that this property should be exempt in any county of the state when the board of county commissioners of that county determined by resolution, and that the effect of the act of the Legislature was to give power and authority to the county commissioners to make the act effective, but having once done this, it had no power to repeal the operation of the act of the Legislature by a subsequent rescinding of the resolution by which the act was put into effect. It will thus be seen that the question involved in that case was entirely a legal one; and in passing upon that question of law this Court held that, from and after the passage of the first resolution of the board of county commissioners, the property involved in that case was absolutely and entirely exempt from all local taxation in Carroll County, unless and until the Legislature should repeal the act; and, further, that the second resolution of the board of county commissioners of Carroll County was nugatory and of no effect. That case is readily distinguishable from the case now being considered, and is not authority for the proposition here contended for by the appellant. There was no discretion remaining in the board of county commissioners for Carroll County after they once, by resolution, made effective the act of the Legislature, and there was no question of fact in that case to be decided by the State Tax Commission; while in this case the question of whether or not the property here claimed to be exempt is in fact exempt, depends upon the question of whether or not this particular personal property is used entirely or chiefly in connection with manufacturing. This raises a question of fact which can only be determined by evidence. The assessment made by the State Tax Commission, as shown by the notice thereof sent to the appellant on August 3rd, 1921, was a determination by the commission based upon a balance sheet furnished in its report to the commission, and at the time this assessment was received by the appellant it was only tentative, and was accompanied with the warning that the same would become final and conclusive unless sufficient reasons for a change were presented to the commission within ten days from the date of the notice.

In the Shriver case the law exempted the property in question from taxation and there was no question of fact to be passed upon by any one; while in this case the exemption depended upon a question of fact, which question of fact the State Tax Commission was legally empowered to determine. What has been said in respect to differentiating the Shriver case from the present case is equally applicable to Consumers Ice Co. v. State, 82 Md. 132; the single question involved in that case being the question of law as to whether or not unissued stock was taxable at all.

The State Tax Commission having jurisdiction in the matter and being the tribunal authorized by law to pass upon this question of fact, if the appellant was not contented with the assessment made, and of which it had notice, it was incumbent upon it to protest the assessment before the commission within the time prescribed in the notice, and introduce before the commission such evidence as it could to show that the property in question was used entirely or chiefly in connection with manufacturing. We are of the opinion that upon its failure to do this, the appellant is now precluded from making this defense in a collateral proceeding brought against it for the collection of the tax. The principle is well settled that where the statute establishes a fact-finding body or commission, and it has jurisdiction over the parties and the subject-matter, its decisions on questions of fact are conclusive and final, in the absence of fraud, unless an appeal is provided by law to some appellate or supervisory tribunal.

In the case of Salisbury Permanent Building Loan Assn. v. County Commissioners of Wicomico County, 86 Md. 615, we said: "The rule on this question is well summarized in United States v. Arredondo, 6 Peters, 729. It was there said: `It is a universal principle, that, where power or jurisdiction is delegated to any public officer or tribunal over a subject-matter, and its exercise is confided to his or their discretion; the acts so done are binding and valid as to the subject-matter; and individual rights will not be disturbed collaterally for anything done in the exercise of that discretion, within the authority and power conferred. The only question which can arise between an individual claiming a right under the acts done, and the public, or any person denying its validity, are, power in the officer, and fraud in the party. All other questions are settled by the decision made or the act done by the tribunal or officer, whether executive, legislative, judicial, or special, unless an appeal is provided for, or other revision, by some appellate or supervisory tribunal, is prescribed by law.' We have in this state always agreed with the principles herein stated, and we are not aware that they have ever been seriously questioned in any court. The decision in Consumers Ice Co. v. State, 82 Md. 140, in no way conflicts with anything which we have said." To like effect see Baltimore v. Canton Co., 63 Md., at 238; Jackson v. Bennett, 80 Md., at p. 77; Smith v. Goldsborough, 80 Md. 63.

As we have said, the question of whether the property involved was exempt from taxation depended upon a question of fact, which fact the State Tax Commission was empowered to determine. It may be argued that the classification of the personal property of the appellant into two classes, the one exempt and the other taxable, involves a question of law. It is conceivable that in some cases this might be true; but that question is of no consequence in this case, because even if there be a question of law involved, thereby permitting an appeal from the action of the State Tax Commission within the time prescribed by the statute, there was no protest or appeal of any kind made, taken, or prayed by the appellant. We are of the opinion that the appellee's first prayer, which was granted by the lower court, fully and correctly stated the law applicable to and governing this case; and that all of the prayers of the appellant, being in conflict therewith, were properly refused.

Judgment affirmed, with costs to the appellee.