Opinion by
Rice, P. J.,The indictment under which the defendant was convicted was drawn under the Act of March 11, 1909, P. L. 13, which makes it “unlawful for any person .... to sell, offer for sale, expose for sale, or have in possession with intent to sell, eggs that are unfit for food, within the meaning of this act.” The defendant was a wholesale dealer in eggs, and Harry Saylor, to whom it was alleged the defendant made the unlawful sale, was also a dealer. The testimony of Saylor was to the effect that he applied to the defendant to buy good eggs, and the latter delivered to him five and one-half crates, for which he paid at a certain price per crate, $33.00; that he took them to his place of business and immediately candled one crate, containing thirty dozen, and found that about seven or eight dozen were good and the rest were bad, being what are called “rots” and “spots.” On the following day, according to his testimony, he complained to the defendant that the eggs were bad and said that he would bring them back, and that the defendant gave him $6.00 and told him not to bring them back, but to sell them cheaper. Saylor sold them for about half price to a baker. This fact does not affect the question of the defendant’s guilt or innocence, but it is significant as showing the practices which the statute was evidently intended to break up. The witness also testified to another sale of two crates, containing sixty dozen, of which a large proportion were unfit for food. The principal contention of the defendant is that, under the evidence adduced by him, the jury could have found that there was no sale of the bad eggs, but only of the good eggs, and therefore it was error to charge the jury that the defendants admitted that these eggs were sold by them on the dates and in the quantities set out by the commonwealth. This contention will be best answered *76by quoting the material portions of the testimony. The defendant described the first transaction in this way: “Mr. Saylor came in and wanted to know whether we had any eggs for sale. I don’t know whether he asked for any particular kind. Sometimes they ask for dirty eggs or cheap eggs. He came in and bought the eggs and looked at them and we sold them to him for $5.50 a box. The eggs were opened and examined in our store. He was satisfied, being a dealer in eggs, and he knows what a rotten egg is, and a spot egg — examined them himself and was satisfied to take them.” Speaking of the second transaction, he testified as follows: “He came in there. There were sixteen cases, if I remember rightly, in the lot, and he says — or we asked — I just forget now — it was more than he bought; I remember that. He paid $5.25 a case, which was seventeen and a half cents a dozen. We probably asked him nineteen or twenty cents for them and he examined the eggs and we agreed on a price and he said, I will buy these two cases and take them home and candle them, and if they suit me I will come back and take the balance at the same price. We told him all right. He examined the eggs partly in the store and then he said he would take them down and examine the two crates thoroughly and see if they suited him, and then if they suited him — the loss wasn’t too heavy — he would purchase the balance of them.” Thomas T. Ellis, a codefendant, testified regarding the first transaction as follows: “Well, Mr. Saylor came in. He inquired whether we had any cheap eggs. My son says, ‘There is six crates there of not very high-priced eggs. ’ And he inquired the price of them, and they gave him the price of them and told him to examine them, and every one of those six crates were examined by Mr. Saylor. . .' . Mr. Saylor paid for the eggs and took them away. Next morning, or the next day at least, he came into the store, he did, quite excited, saying that he had paid too much for them, they wasn’t as good as he expected after he examined them, and he wanted his money back. So the agreement was to settle it with *77Mr. Saylor, that we didn’t want him to lose any money on the eggs — we don’t want anybody to, we don’t do business in that shape, arid so wé settled — an agreement to settle in this way — in giving hirii — I dori’t know whether it was five or six dollars back.” A perusal of this testimony leaves no room for doubt that the title to the entire contents of the crates, the good eggs as well as the eggs that were unfit for food, passed to the purchaser. It is true there is another portion of the testimony from which, it is argued, the jury might have inferred that the parties dealt upon the supposition that there were some bad eggs in each crate, that in fixing the price per crate this probability was taken into account, and that the implied understanding was that, if after candling them the purchaser found there was a greater proportion of bad eggs than had been supposed, he would be entitled to a return of a proportionate part of the price he had paid. The testimony does not show very clearly that he would have been entitled, as a matter of right, to demand such return. But let it be assumed that he had the right, that would not deprive the original transaction of any element of an executed sale. Even in that view of the bargain all of the eggs became the absolute property of the purchaser immediately upon delivery and payment of the stipulated price. The purchaser, even though he was entitled to a return of part of the price, was under no obligation to 'return the bad eggs in order to obtain it. He had a perfect right to retain those that were unfit for food, and to make such use of them as he could lawfully. As there was no view of the testimony adduced either on the part of the commonwealth or of the defendant, under which the jury could have found that the sale did not' include the bad eggs as well as the good eggs, the learned judge committed no error in instructing them as he did, or in refusing the defendant’s points. The law was well stated in the portion of the instructions contained in the ninth assignment of error. The defendant in a criminal case has no just cause to complain that the law applicable to the case is so clearly and posi*78tively stated that it cannot be misunderstood by the jury. If certain facts, which in law constitute a sale, are testified to by the defendant himself, the judge does not invade the province of the jury by instructing them that the transaction was a sale. For the province of the judge is not merely to counsel, but to instruct, and it is the duty of the jury to take his instructions as the best evidence of the law. This was conceded in Kane v. Commonwealth, 89 Pa. 522. It was more emphatically declared in Commonwealth v. McManus, 143 Pa. 64, and Commonwealth v. Goldberg, 4 Pa. Superior Ct. 142. And the general doctrine has been practically recognized and applied in many other cases.
With regard to the offers to prove the rules of the Philadelphia Produce Exchange, and the custom or usage of wholesale dealers in eggs in Philadelphia, we remark that if there is any local custom or usage under which such a transaction as is described in this case would not be a sale within the meaning of the act of assembly, it cannot be sustained as a valid custom. A custom or usage repugnant to the express provisions of a statute is void, and whenever there is a conflict between a custom or usage and a statutory regulation the statutory regulation must control: 12 Cyc. of Law and Procedure, 1054-6; Greene v. Tyler, 39 Pa. 361.
There are several objections to the offer to prove a general understanding that was reached at a conference between the agent of the pure food department and the produce exchange, relative to the manner of doing business by wholesalers which would not be objected to by the pure food department. It is needless to refer to these objections in detail, for one is so obvious that it needs no discussion, and that is that the officer of the commonwealth could not abrogate the plain provisions of the statute.
In the last assignment of error the constitutionality of the act is brought into question, the objection suggested being that the subject of the act is not clearly expressed *79in its title. This assignment is not pressed in the printed brief of appellant’s counsel, and, if it were, we think it could not be sustained. Under the circumstances we deem it unnecessary to discuss the question at length.
All of the assignments of error are overruled.
The judgment is affirmed, and the record is remitted to the court of quarter sessions of Philadelphia county, with direction that the judgment be fully carried into effect, and to that end it is ordered that the defendant forthwith appear in that court and that he be by that court committed to serve and comply with such part of his sentence as had not been performed at the time this appeal was made a supersedeas.