(after stating the facts.) This is the second appeal in this case. As above stated, the opinion on the former appeal is reported in 160 Ark. 17, under the style *475 Floyd v. Miller Lumber Company. Counsel for appellants say that the original complaint was drafted with a view of raising the sole issue -of the constitutionality of the Severance Tax Act. The Legislature of 1923 passed an act to levy ia privilege or license tax upon all persons, firms, -and corporations engaged in the business of severing our natural resources from the soil or water. General Acts of Arkansas, 1923, p. 67.
Appellants attacked the act on the ground that it was in violation of so much of § 5, art. 16, of our Constitution, which reads as follows: “All property subject to taxation shall be taxed according to its value, that value to be ascertained in such manner -as the General Assembly shall direct, mailing the same equal and uniform throughout the State. No- one species of property from which a tax may be collected shall be taxed higher than another species of property of equal value, provided the General Assembly shall have power from time to time to tax hawkers, peddlers, ferries, exhibitions and privileges, in such manner as may be deemed proper,” etc.
Four members of this court for different reasons held that the 'statute was a tax upon persons engaged in a particular line of business, and that it was not a property tax.
Having reached' the conclusion that the tax levied by the statute was -a tax on business -and not on property, four members of this court for different reasons united in a decision that the tax was an occupation tax and not a property tax, and therefore was not in violation of the provision of the Constitution -above quoted. Whether this decision was right or.wrong, it is the law of the case; it is res judicata. The rule has been long established-in this 'State and uniformly adhered to that in the same cause this court will not reverse nor revise its former deeisons. Fortenberry v. Frazier, 5 Ark. 200; Porter v. Doe, 10 Ark. 186; Taliaferro v. Barnett, 47 Ark. 359; Vogel v. Little Rock, 55 Ark. 609; United States Annuity *476 & Life Ins. Co. v. Peak, 129 Ark. 43; Danaher v. S. W. Tel. & Tel. Co., 137 Ark. 324; Ft. Smith Lbr. Co. v. State of Arkansas, 138 Ark. 581; Stuart v. Barron, 148 Ark. 380 ; Mo. Pac. Rd. Co. v. Walnut Ridge-Alicia Road Imp. Dist., 160 Ark. 297; St. L. S. F. R. Co. v. Kirkpatrick, 162 Ark. 65, and numerous other cases cited under the head of Appeal and Error in 1 Crawford’s Digest, § § 405 and 5 Crawford’s Digest, § 405. This general rule is grounded on public policy, experience, and reason. If all questions that have been determined by this court are to be regarded as still open for discussion and revision in the same cause, there would be no end of their litigation until the financial ability -of the parties and ingenuity 'of their counsel had been exhausted. A rule that has been so long established and acted upon and that is so important to the practical administration of justice in the courts should be followed and not departed from.
On this question in the case of Hart Steel Co. v. Railroad Supply Co., 244 U. S. 294, Mr. Justice Clark, speaM ing for the Supreme Court of the United States, said: i£This doctrine of res judicata is n'ot a mere matter -of practice or procedure inherited from a more technical time than ours. It is a rule -of fundamental and substantial justice, £<of public policy and private peace,’ which should be cordially regarded and enforced by the courts to the end that rights -once, established by -the final judgment of the court of competent jurisdiction shall be recognized by those who are bound by it in every way, wherever the judgment is entitled to respect. Kessler v. Eldred, supra.”
But counsel for appellants claim that the general rule of the law of the case 'should not be applied because their amended complaint has broadened the issues and raised among other things the question of the proper construction of the act and its applicability to appellants. This however does not bring them within any recognized exception to the general rule.
Counsel for appellants admit that their -original complaint was drafted with the view of raising the sole *477issue uf the constitutionality of the Severance Tax Act and thereby admit that that issue was squarely and correctly submitted to the court for its hearing and determination. The act was held to be eoDistitutional on the ground that it was an occupation tax, and no testimony or raising of additional issues as to the construction of the act or its applicability to appellants can prevent our former decision and judgment from being the law of the case. Indeed, it is difficult to see how any sort of testimony 'could change the issue as to the constitutionality of the act. That issue was squarely presented by a construction of the act and the 'section of our Constitution which it was claimed was violated.
Whatever views the different members may entertain as to the soundness of our former decision, the four members of the court who made it agree that the decision upholding the validity of the act as an occupation tax must he regarded as the law of the case.
In this connection, on account of the public importance of the act, the writer deems it appropriate to correct what he considers an erroneous interpretation of his separate opinion oni tihe former appeal.
Counsel for appellants say that Mr. Justice Hart bases the validity of the act on the police power of the State and naively add that they hope he will change his opinion in view of the fact that every one admits that the act was passed for the purposes of revenue. Taxation may he for the purpose of raising revenue, or for the purpose of regulation. Where it is levied for the purpose of regulation, it is an exercise of the police power of the State,, and it is undoubtedly true that the statute in question was passed for the purpose of raising revenue. The writer was of the opinion that the act was not obnoxious to the constitutional provision quoted above, which is nota limitation upon the police power, hut upon the taxing power of the State. The writer merely intended to say that the word, “privileges,” as used in the Constitution, meant that the General Assembly should have power from time to time to tax occupations for *478 revenue which, are privileges within the meaning of the proviso. He then stated that he thought the word “privileges” was broad enough to include all classes of occupations which might be regulated under the police power.
This is quite a different thing from saying that the tax was levied under the police power of the State. He intended to say that the tax was levied under the taxing power of the State, and he was only attempting to define the class of occupations upon Which he thought the framers of the Constitution intended that the proviso should operate. In short, he thought that the framers of the Constitution, instead of using the word “privileges” to mean whatever occupations the Legislature might 'choose to declare and tax as such, undertook to restrict the meaning of the word to include only such occupations as might be regulated under the police power, but meant that the tax would be levied under the taxing power by the proviso of the Constitution just referred to and not under the police power of the State.
This brings us to a consideration of the construction of the statute with reference to the persons affected by its terms. One of the primary rules governing legislation of this sort is that the istatute ¡must act uniformly upon all within the class. In the application of the rule, the Supremo Court of the United States has held that the selection of all who are engaged within the State in mining ore,- or producing ores on their own account, that is to say, as owners or lessees, as the subject of an occupation tax, is permissible under the Constitution of the State of Minnesota. Oliver Iron Co. v. Lord, 262 U. S. 172.
Section 1 of the present act provides in effect for the levying of a privilege or license tax upon each person, firm, or corporation called the producer engaged in the business of mining, cutting, or otherwise severing from the soil or water for commercial purposes natural resources including timber and all other forest products of the soil or water of Arkansas.
*479.Section. 4 contains a proviso that the act shall not apply to- nor shall any severance" tax be required of the individual owner of timber who o-ccasionally severs -or cuts from his own premises such stocks, logs, poles, or other forest products as are utilized by him in the construction or repair of his own structures -or improvements. 'Continuing, it is declared that1 the- purpose of this clause is to exempt therefrom such severers as utilize forest products to their own personal use and not for sale, commercial gain or profit.
Section 8 -provides that the payment of said privilege taxes shall be required of the severer or producer actually engaged in the operation of severing natural products, whether as -owner, lessee^ concessionaire or contractor.
It is -apparent then that the owner of lands, who outs down trees for the purpose of building fences or repairing and constructing houses and other improvements on the land from the timber thus severed from the soil is exempted from paying the tax. It is equally evident that when the timber severed from the soil is sold, it falls within the terms of the act, and the tax must be paid by -some one. To illustrate: if the owner of timber lands desired to sever it for the purpose of clearing the land -and putting it in cultivation and hired other persons to sever the timber for him, he would be required to pay the -severance - tax. If the owner should lease his land to another person for a designated number of years in order to have.his lessee clear the land and put it in cultivation, and if the consideration for the lease in wh-o-le or in part was that the lessee should have the timber so removed from the land, the severance tax would have- to be paid by such lessee. It will be noted that the language of the act i-s specific on this subject and provides that the severer or producer as he is called shall pay the tax. The act is very broad and comprehensive, and is levied upon all persons engaged in severing the timber from the soil -for sale or commercial purposes, regardless of the purpose ' for *480which it is done. The only exception is that the. tax shall not be paid where the timber severed is actually used in erecting or repairing structures and other improve: ments on the land. The application of the timber.in part payment for clearing the land is a -severing of it for commercial purposes, although the primary purpose of -severing it is to enable the land to be put in cultivation. Where a landowner makes a contract with another person to cut and.remove the timber from his land for sale or commercial purposes, the owner must pay the severance tax; for such contractor and his servants who- actually sever the timber act for the owner in the.premises, and their act of severing the timber is the act .of the owner.
The result of our views is that the decree of the chancery court was correct, and will be affirmed.. .
Wood, J., dissents.