(after stating the facts as above). That soakage recovered from the staves of empty whisky barrels must before entering into commerce bear the government tax on spirits of $1.10 per gallon was decided by this court in Hunter v. Corning & Co., 86 Fed. 913, 30 C. C. A. 483. There Corning received from the distiller’s bonded warehouse for rectification the barrels of whisky, emptied them, and recovered the soakage from the barrels. It was assumed that the spirits there recovered were a part of such as had entered into the pores of the barrel staves while in the bonded warehouse, and that therefore no tax had in fact been paid on such soakage, since under the law the tax actually paid was on the free, pourable contents of the barrel as gauged at time of removal from the warehouse. As to this it is frankly stated in the brief for appellant;

“We admit in this bill that, at the time a double-stamped barrel leaves a distiller’s bonded warehouse, the liquid then contained in the pores of the wood of such barrel is the original distilled spirits, and that the general tax of $1.10 per gallon has not been paid thereon by the distiller. We further admit that under Hunter v. Corning, 86 Fed. 913, 30 C. C. A. 483. it is the law of this circuit, while such decision stands, that if such double-stamped barrel be practically treated at once by the extractor, he should pay the general tax upon the spirits which he obtains from the pores of the wood of such double-stamped barrel.”

The relief sought by the bill herein is bottomed on the foundational allegation that the soakage proposed to be extracted by appellant is in fact tax-paid, and should not, on being recovered for commerce, again be taxed.

[1] The allegations of fact, from which the conclusion of tax payment is claimed to follow, are that appellant, in its sole business of recovering the soakage from'the barrels, buys of retail liquor dealers and others only single-stamp barrels (as above defined), and that such single-stamp barrels, when coming to appellant for treatment, have been ■ out of the warehouse an average of six months or more, and that during such six months all the nontax-paid spirits in the staves at time *233of withdrawal from the warehouse will have evaporated from the outside of the barrel, and have been wholly replaced by absorption from the tax-paid contents of the barrel.

Conceding the process of evaporation and absorption to be as stated in the bill, the conclusion that the tax has been paid on the soakage in the barrels when they come to appellant, under the bill, depends in large measure on the time the barrels have been away from the warehouse. As to this all the bill charges is that “the average time for such period is not less than six months,” and in appellant’s brief it is stated “an average of six months’ time elapses as to every double-stamped barrel which has been changed into a single-stamped barrel from the date it leaves the distiller’s warehouse and is purchased by us.”

But what has the average to do with the case? The fact that six months is the average would imply that in some cases the time is longer, and in others shorter, than six months. Indeed, for anything that appears in the bill to the contrary, barrels may leave the distiller’s warehouse, come into the hands of the wholesaler or rectifier, be emptied, replaced by tax-paid liquor and single-stamped, and the barrel finally be emptied and sold to appellant, all within a period of a very few weeks, or even days, and in such case the tax on the soakage would clearly be unpaid.

Suppose a consignment of just such barrels were treated by appellant, and 1,000 gallons of nontax-paid spirits recovered from them. Should this under any circumstances be permitted to enter commerce without paying the tax? Then suppose another such consignment comes for treatment, where the intervening time is a year, and a like amount recovered which may be considered tax-paid because of the evaporation and loss of all the original nontax-paid soakage and replacement by the tax-paid contents. It is true that as to the two lots the average of time intervening between their leaving the warehouse and reaching appellant would be six months; but how would this affect the right of the government to have its tax on the first lot? The loss to the owner through absorption of the tax-paid liquor, does not give rise to any claim for a refund of the tax which has been paid on what has been so lost, whereby it might with show of reason be claimed that the tax due the government on the first lot might be balanced against the counterclaim arising on the second. Under such circumstances the very most that could be claimed is that the first lot, not having paid the tax, should pay it, and the second, having once paid the tax, ought not again to be required to pay. So if the soakage in one lot or barrel is tax-paid, this fact would not in any way relieve from the liability to pay the tax on the soakage from any lot or barrel on which the tax has not been paid.

[2] Furthermore, from the allegations of the bill, the fact that a barrel is single-stamped does not of necessity require the conclusion that it has been materially longer out of the warehouse than the double-stamp barrel. The bill states that the barrel becomes single-stamped when the distiller’s double-stamp package is emptied by the wholesaler or rectifier, refilled with tax-paid spirits, and stamped as tax-paid — the two stamps theretofore thereon being effaced. But it states *234also that distiller’s double-stamp packages are also sold directly to the retail dealer, and to others, who may finally empty them, arid who may have on hand, and may empty indiscriminately, double and single stamped barrels, without rule or probability as to which was first emptied. So the allegation that appellant uses only single-stamp barrels does not, under the facts charged in the bill, necessarily distinguish, as between single and double stamp barrels, which was longest out of the bonded warehouse.

[3] But the bill states yet other elements than that of time as bearing on the rapidity of evaporation, in the words following:

“That such single-stamped barrels are held by such rectifiers and the said wholesale liquor dealers until sold, and such barrels are carried or transported by steam cars, wagons, trucks, or other vehicles, and sometimes by all of them, to divers points and distances, and they are handled and rehandled divers times, and become exposed to varying degrees of temperature, each and all of which largely increase and accelerate the aforesaid process of evaporation and absorption, before any of such barrels become empty in the hands of the qualified retail liquor dealers or other persons, who have poured out, used, or consumed the contents thereof.”

Ordinary experience would suggest yet other materially influential conditions, such as the kind and quality of the material of the barrel, as bearing on the porousness of the wood, and the nature of the place where the barrels are kept after removal from the warehouse — whether in a closed, dark, damp place, which would retard, or in a place open, light, and airy, which would facilitate, evaporation. And so from the bill itself it may be concluded that under some conditions the evaporation may be considerable in a short time, and under others may be slight during a much longer period.

[4] While the bill alleges that appellant treats or proposes to treat single-stamp barrels only, and that single-stamp can be readily distinguished from double-stamp barrels, such statements of conclusions are dependent on the allegations of fact upon which they are predicated. In the bill it is stated:

“That it is impossible to ascertain or state the exact period of time which elapses as to each barrel from the date of its removal from the distillery bonded warehouse to the date your orator removes from the pores of the wood thereof the liquid contained therein.”

The reason for such impossibility is well stated in appellant’s brief as follows:

“It is true that, as all marks, brands, and stamps have been effaced from each barrel we buy before its purchase by us, as provided by section 3324, Rev. St. [Comp. St. 1913, § 6105], it is impossible for us to trace each barrel and show the exact length of time which has elapsed since it left the distiller’s hands.”

There is nothing distinctive about the barrels themselves, as between single and double stamp barrels. Both kinds come into the hands of those who sell to appellant. If the stamps and brands remained thereon, the information would be readily available to determine, not only when and from what distillery the barrels were taken, but also whether the barrels were single or double stamped, though in such case the now single stamp would probably be denominated triple stamp. But *235the obliteration of all stamps and brands makes all barrels then look alike, and the same conditions which make it impossible to know when the barrels left the warehouse make it alike impossible for appellant to know which of the empty barrels were single and which double stamped; and it is not apparent from the bill how a gauger, who inspects the barrels when they come into appellant’s possession to determine whether they may be treated tax-free, can know any more about it than appellant.

But appellant urges that, as a necessary result of the continuous process of evaporation and absorption after the barrels leave the warehouse, to use the language of its brief:

“There ts no way of ascertaining from time to time by the day, week, or month just how much, if any, of the distilled spirits which formed the original soakage remain in the pores of the wood of each barrel. Hence it is very clear that the tax which should be paid by the extractor, if any, must vary from time to time, or constantly shift as the length of time increases from tile date the barrel leaves the warehouse, and also as such evaporation may be enhanced by modifications in heat, changes in position, through handlings by different persons, transportation, and the like. Certainly a question would aiise in each barrel as to what quantity of the original spirits which had not paid the tax remained in the pores of the wood thereof.”

This admitted uncertainty as to each barrel is necessarily reflected in any accumulation of barrels, and surely does not warrant the alleged conclusion that the soakage in any number of barrels is tax-paid.

[5] What is the rule governing such a condition of uncertainty? In appellant’s brief if is stated to be:

“Any doubt as to such quantity must bo solved, under the authorities, in favor of the extractor. There is no way in which such quantity could be ascertained, and any attempt to collect a tax thereon would be void.”

We find no authorities which support such a doctrine. If under the statute it were doubtful whether or not spirits or any other article should be taxed at all, such .doubt would inure to the benefit of the one sought to be taxed. But there is no doubt of the statute requiring all spirits included in its provisions to pay the tax. The question here is not one of statutory construction, but of proof whether or not the tax has been paid; and we are of the opinion that one asking the government to stamp, as tax-paid, spirits to be marketed in competition with tax-paid goods, must present to the authorities affirmative proof that the tax has been paid; and such requirement is not satisfied by showing a state of facts under which it is unknown or unknowable whether all or any part is paid.

If, when the barrels leave the warehouse carrying in the staves spirits on which no tax has been paid, and are so handled that at a given time thereafter it cannot be known how much, if any, of the soakage in the staves has paid the tax, the owner is very much in the situation of one who willfully and indistinguishably mixes and confuses his own goods with those of another. The mixer must bear any resultant loss — often to the extent of losing his own goods. If, as applied to circumstances like those here presented, the rule were otherwise, one who would mix some tax-paid alcohol with a quantity on which no tax has been paid would be entitled to have the whole mass *236treated as tax-paid, unless the government could affirmatively show the -exact proportions of each.

It is our view that, when tax-paid spirits are mixed or suffered to be mixed .with nontax-paid spirits, so that the proportion of each cannot be ascertained, one undertaking to market the mixture must pay tax on the whole. In an early case it was held: *•

“That the payment of the tax on all the spirits not having been proven, there being a mixture of fraudulent spirits with spirits that had paid the tax, the whole lot was legally forfeited to the use of the government.” United States v. Fifty-Four Barrels of Distilled Spirits, 25 Fed. Oas. 1074.

[6,7] The bill alleges that on the faith of the Scott letter and others, and the long practice thereunder of permitting such soakage to be recovered and marketed without requiring payment of any further tax thereon, there has been a long acquiesced in practical construction of the statutes and rules governing such a situation by those charged with supervision over and collection of the internal revenue, and that it would now be highly inequitable to permit this practice to be changed as against appellant, which has, in reliance thereon, invested $100,000 in its plant which would become practically valueless. Many cases are cited in appellant’s brief to the general effect that, where a statute is of doubtful meaning, long and uniform construction and. practice thereunder by the department or officers of the government' charged with its enforcement is entitled to great weight, and will ordinarily be accepted and followed by the courts. But is there such a question or principle here involved?

The statute plainly prescribes the records to be kept and returns to be made by rectifiers in order to afford proof to the officers charged with carrying out tire law that the rectifier handles only tax-paid spirits. In the practice belied upon, the statute was departed from in dealing with appellant, notwithstanding he operated under a rectifier’s license. In its case proof other than that indicated by the statute was accepted as evidence that the spirits it "dealt with were tax-paid. Assuming that the plain provisions of the statute might be departed from in favor of one holding a rectifier’s license, who is handling spirits on which the tax has unquestionably and provably been paid, but who cannot malee proof in the particular form and -manner which the statute prescribes for ordinary rectifiers, yet the question here presented is not one of statutory construction or interpretation, but of proof as to whether or not the tax has in fact been paid on the soakage which appellant would recover. If appellant cannot comply with tire statute, it surely can have no vested right or interest in the kind, degree, or character of proof that may properly be required to establish tire fact of payment before the government shall stamp the recovered product as tax-paid. If experience has convinced the Bureau that under the long-existing practice sufficient proof was not afforded that the tax had been paid on spirits which appellant would market as tax-paid, no reason is apparent why it may not amend and change tire practice, so that the government may be amply secured in its revenues. That such was the experience claimed by the Commissioner to be the reason for the change in the practice abundantly appears from one of the *237orders of May 18, and a letter of the Commissioner of March 31, 1910, referred to in the bill. • A different question might be presented if it were now undertaken to unsettle and impeach completed transactions under the old practice. But the orders complained of have reference only to the future.

It is urged that the May 18th orders are unreasonable, because their enforcement would in effect prevent appellant from carrying on its business, since, owing to the required effacement of all stamps, marks, and brands on the empty barrels before appellant buys them, it cannot supply the information demanded. But according to the bill the presence or nonpresence in the staves of nontax-paid alcohol depends mainly on the time which has elapsed between withdrawal from the warehouse and treatment by appellant. The orders require proof of the facts from which this may be determined. Surely there is nothing unreasonable or improper as to the puroose of the orders; and if the prescribed method cannot be complied with, the bill suggests none other, except the untenable assumption of “average of time.” The effect of the orders on appellant’s business is not an exclusive test of their reasonableness. In a letter, referred to in the bill, of July 28, 1905, of Commissioner Yerkes, it is said:

“It is, of course, evident that alt spirits in the staves of a new single-stamped barrel which has been filled with tax-paid spirits must consist of spirits on which the tax has been paid; and consequently no further tax can bo collected on such spirits when recovered from the staves.”

If it were proposed to treat such new barrels which could clearly and certainly be proved to be such, a different question might arise. But here the bill expressly disclaims that appellant treats new barrels into which the rectifier or wholesaler has put tax-paid spirits, but, on the contrary, alleges that the barrels it proposes to treat are those which, before being refilled by the rectifier or wholesaler, and sent out as single-stamp barrels, were in the bonded warehouse, on leaving which the soakage contained in the staves was not tax-paid. And since from the bill itself it is apparent that appellant does not and cannot know, and therefore cannot prove, whether the” soakage in such barrels at the time of extraction is tax-paid, it is quite immaterial to appellant what rule on-the subject the Bureau may promulgate. So far as appellant is concerned it could riot in any event, under the facts of the. hill, affirmatively show that the soakage it proposes to extract and market is tax-paid, and it is therefore not affected by the precise form, kind, or degree of proof which the government may require to show that the tax is paid. Even if the orders might be said to be unreasonable as to barrels which never held nontax-paid spirits, that is clearly not the case as to barrels within the purview of the bill.

Holding as we do that the government has in any event the right to require satisfactory proof that the tax on the soakage in any and all barrels has been paid before same may be extracted, stamped, and marketed as tax-paid, and finding from the bill that appellant in its business as described does not and cannot and will not know whether or not the tax has been paid on the soakage it proposes to extract, we conclude that the bill was properly dismissed for want of equity, and the decree of the District Court is accordingly affirmed.