This record is before us on writ of error to test the validity of section 18 of Ordinance No. 20808.
The statement filed in the First District Police Court charged' a violation of said section by the defendant company in that it did, on April 28,1903, carry and expose for sale at Leonard and Washington avenues, milk, which said milk did show on analysis less than three per cent by weight of butter fat, the said Nutter fat being estimated gravimetrically by the Adams Paper Coil process, contrary to the ordinance in such cáse made and provided. On a trial in the police court, defendant was found guilty and fined twenty-five dollars. It appealed to the St. Louis Court of Criminal Correction and in that court filed its motion to quash in the nature of a demurrer to the complaint on twelve different grounds. The said court sustained said motion and dismissed the cause, and thereupon the city sued out its writ of error in due time and form.
Without repeating the various grounds of the motion to quash or demurrer, it will suffice to say that in substance they assailed the said section of the ordinance along the same lines that were followed in St. Louis v. Liessing, -which was argued and submitted along with this case at the same time. We have already expressed our views on the objections to this section of the ordinance in St. Louis v. Liessing. The particular provision involved in this appeal is the charge in the information that the defendant company sold milk showing ‘ ‘ on analysis less than three per cent by weight of butter fat, the said butter fat being estimated gravimetrically by the Adams Paper Coil process.” In this series of cases we have already determined, in- harmony with the great weight of authority in this country, that under its charter the city of St. Louis has the right to fix a standard of purity for milk and cream sold and offered for sale within its municipal limits and to pro*512Mbit tbe sale of milk wMch does not conform to that standard even though it be natural milk from healthy cows, that the purpose of the ordinance is to prohibit not merely the dealing in milk which has been in fact adulterated, but also in the sale and offering for sale of milk of such inferior quality that it falls below the prescribed standard of purity. We also hold that, in view of scientific knowledge and the numerous legislative enactments and ordinances in other States, the standards of milk and cream fixed by this ordinance are not so unreasonably high as to justify this or any other court in holding it void on that ground, and this court is not justified in holding that milk below the said standard is so universally conceded to be wholesome and innocuous that the ordinance is void on that account.
The one question remaining is, does the fact that the ordinance on a contest requires milk on analysis shall show not less than three per cent by weight of butterfat, “estimated gravimetrically by the Adams Paper Coil process,” render the ordinance void? Having reached the conclusion that it was within the power of the Municipal Assembly to fix the standard of purity, this court cannot say as a matter of law that it was unreasonable for the Assembly to provide that the weight of the butter-fat should be estimated, calculated or ascertained gravimetrically, or measured by weight. Nor that the adoption of the “Adams Paper Coil process” was not a proper gravimeter. The Assembly unquestionably had the right, in dealing, as it was, with a scientific question, to fix a scientific standard, and in the absence of all showing to the contrary this court cannot take judicial cognizance that the Adams Paper Coil process was not a proper test. By so fixing it a definite standard, controlling alike upon the city and one charged with a violation of the ordinance, was established, and the weight of the milk can be ascertained *513scientifically and not left to the uncertain opinion of witnesses, whether experts or laymen, and the judgment of inspectors. On the contrary, if no fixed standard or test was established by ordinance, the vendor of the milk might well complain that his rights had been left to the unregulated judgment of the inspectors, or if no one gravimeter had been specified, then he might well complain that different tests might lead to different results and to varying standards of purity. This ordinance looks to his protection by providing that when an inspector takes a sample of milk or cream for analysis “the person, firm or corporation from whom the sample is taken shall, on demand therefor, then and there, have a right to a duplicate of said sample sealed with the seal of the officer on tendering him a suitable receptacle therefor.” In this manner he can have his milk of the same quality tested by any disinterested chemist by the same method and is not conclusively bound, by the analysis of the city chemist.
The argument of inconvenience urged by defendant we do not regard as of great weight. The ordinance does not attempt to change the rules of evidence, but is scrupulous to preserve to the vendor evidence under the official seal of the inspector which he may submit to an unbiased disinterested chémist to be tested by identically the same standard as that which the city proposes to use to determine whether he has or has not violated the ordinance. He has his day in court and by his counsel can subject the city chemist to the most rigid examination as to his method of testing the milk, and then, if adverse, meet it with the testimony of his own expert. The ordinance nowhere makes the test of the city chemist conclusive upon defendant. It simply fixes a standard and leaves the question of whether or not his milk is up to that standard -according to the *514prescribed test for all alike, to be ascertained by settled principles of legal evidence.
We think there is nothing to differentiate this case in principle from the others in which we have sustained the constitutionality of the ordinance. The St. Louis Court of Criminal Correction erred in dismissing the petition, and its judgment is reversed and the cause remanded to be tried in accordance with the views herein announced.
Brace, G. J., Marshall, Burgess, Valliant, Fox and Lamm, JJ., concur.