By the Court,
Wallace, C. J.:This was an action brought against the defendants, proprietors and publishers of the Eaily Evening Bulletin, a newspaper published in the City and County of San Erancisco, to recover damages for the publication in said newspaper of two alleged libels upon the plaintiff. The plaintiff alleges that at the time of the publishing of the libels complained^ of he was engaged in the business of keeping cows, near Black Point, in that city and county, and feeding them upon hay and the slops of a distillery, and selling the milk of these cows for human food.
*245The alleged libels.complained of (omitting the inuendoes) are respectively as follows:
“A week ago officer Stone was detailed by Chief Burke to watch the Black Point milk ranches. He found on E. Johnson’s ranch about one hundred and twenty cows feeding on a thin, sour slop, coming by flumes from the distillery tank. The men in the shed denied that they were feeding swill, and said his cows were fed on hay, etc. By the advice of Prosecuting Attorney Louderback a close watch was kept on the place all the week, and yesterday the officer entered the shed and found the cows snorting like hogs, and their heads in troughs filled with thick, sour swill. The men in charge of the place, James Clark and M. T. Chase, no longer denied that they were feeding on swill, but said it was by Mr. Johnson’s orders, and that he expected to be arrested, and that if they came after him he would give himself up. Warrants have been' taken out by Mr. Louderback against E. Johnson and his two employes, and are now in officer Stone’s hands. In a few days, therefore, we shall see whether a practice that is as deadly as the assassin’s steel or lead to the infants who suffer from it, can be carried on with impunity.
“ For some time past the Bulletin and other journals of this city have endeavored to warn the people of the danger incurred by using milk furnished by cows fed upon distillery refuse. Eull grown persons can stand a certain amount of poison mixed with their food for a time, but there is little doubt that deleterious compounds, if steadily used, in the end «will break down the strongest constitutions and shorten life many years. In cities individuals are liable to be deceived in the purchase of food, and it is sometimes the case, even in exercising the utmost care, that unhealthy animals will be slaughtered and offered for sale. Men may in good faith vend an article injurious to health, but all admit *246the necessity of severe punishment in case of an attempt to palm upon the community a commodity known to he diseased. Should cattle be slaughtered and habitually sold in our markets, known to the vendor to have been diseased previous to being killed, the entire community would demand the punishment of the offenders. Tampering with life in the way suggested would not be tolerated, yet we permit the sale of milk, which is quite as dangerous.
“In San Francisco it has been shown that the practice has been introduced of feeding cows from the refuse of distilleries, and that this refuse is not .only fed in the neighborhood of the city, but is carted into the country and fed to cows whose milk is brought here and sold. This milk the community should know is unfit to be used. It in truth contains a poisonous quality. It will destroy life, if given steadily to children for much length of time, and there is little doubt that it undermines the health of those who habitually use it.
“ Dr. Rowell, in a lecture at Dashaway Hall, gave it as his opinion that one death per day was caused by the use of this milk alone.
“Medical authority agrees that milk produced by cows fed upon the slops of distilleries is most injurious, and does destroy life.
“ Heither grown persons nor children can use it for much length of time without the most pernicious results.
“ There is no dispute as to the properties of milk obtained from such a source.
“ There is danger in its use. Even animals are killed by it when fed steadily to them.
“ The Board of Supervisors, knowing its deleterious qualities, have passed an ordinance forbidding the feeding of cows with distillery refuse, and the vending of milk produced elsewhere by the feeding of such refuse.
“There has been sufficient notice given to stop a traffic which strikes at the health and lives of our citizens. There *247is no excuse for men who send such milk to this market— ignorance can no longer be pleaded in extenuation of a crime. Cows are fed upon the poisonous compound because it costs little, and money can be made from the traffic.
“ Every man arrested hereafter, who may be caught in feeding this article to animals whose milk is sought to be sold in this city, should be punished to the utmost extent of the law; and it should be the business of the Health Officer, or some other competent person, to test milk brought to market for sale, and every person who vends diseased milk should be prosecuted.
“It would be criminal to trifle with a subject which is so important to the public. Ho man has a right to bring an article to market injurious to the health of our citizens, and which destroys, according to accepted testimony, one person a day. Hot another quart of poisonous milk should be permitted to be sold in San Francisco. Will those whose duty it is see that no more lives be sacrificed to the lust of gain which has prompted dealing in milk that destroys human life?”
The defendants, in their answer, admitted the publication alleged, but denied that the articles were published with the intent to injure the plaintiff in his business or good name, or that the articles published were defamatory or malicious, and alleged that they contained a fair and true statement of facts, which were of public notoriety, and that the facts stated in these articles, with reference to the deleterious character of cows so fed, were true. They also pleaded that the business of the plaintiff", in' vending the milk of cows fed upon still slops, was illegal and in violation of a certain order of the Board of .Supervisors of said city and county, being Order Ho. 730, entitled an order “to prohibit the feeding of milch cows on still slops, and the sale of milk from cows fed on still slops, and from sick or diseased cows,” approved September 18th, 1866.
*248At the trial, it being admitted that the articles published were published of and concerning the plaintiff only in respect of his business of feeding cows upon still slops and vending their milk, and that he had sustained damage in respect of the profits of that business in a named sum, the plaintiff rested.
The defendants then offered in evidence said Order So. 730, which -is as follows:
“ Order No. 730.
“ To Prohibit the Feeding of Milch Cows on Still Slops, and the Sale of Milk from Cows Fed on Still Slops, and from Sick or Diseased Cows. Approved September 18th, 1866.
The People of the City and County of San Francisco do ordain as follows:
“ Section 1. S;o person shall feed, or cause to be fed, to any milch cow, any still slops or other food calculated to render the milk of such cow unwholesome or unsuitable for human food.
“Sec. 2. So person shall sell, deliver, supply, or furnish to any person any milk from any cow fed, in whole or in part, upon still slops or other food calculated to render the milk of such cows unwholesome or unsuitable for human food; and no person shall sell, deliver, or supply to any person any milk from any sick or diseased cow.
“ Sec. 3. Any person who shall violate any of the provisions of this order shall be deemed guilty of misdemeanor, and on conviction thereof shall be punished by a fine of not less than twenty-five dollars nor more than five hundred dollars, or by iihprisonment in the County Jail not less than ten nor more than one hundred days.”
This ordinance was offered for the purpose of showing that the business of vending the milk of cows fed on still *249slops, in which the plaintiff was engaged, was an unlawful business or pursuit, and as constituting a bar to the action. The plaintiff' objected to the evidence upon several grounds, which will be noticed hereafter, but the objections were overruled and the ordinance admitted in evidence. Judgment was thereupon rendered in favor of the defendants, from which judgment this appeal is taken.
1. It is objected that the ordinance was one beyond the authority of the Board to enact. The statute of April 25th, 1863 (p. 540), confers authority upon the Board “to make all regulations which may be necessary or expedient for the preservation of the public health,” etc.; and upon the authority of Ex Parte Shrader, 33 Cal. 279, and upon principle as well, we think, that statute to be one within the constitutional power of the Legislature to enact.
If it indeed be a fact that the milk of cows, fed in whole or in part upon still slops, is unwholesome as human food, there can be no doubt of either the authority or the duty of the Board to enact the ordinance in question, and the scientific correctness of the determination by the Board of the matter of fact involved is not open to inquiry"here.
2. The ordinance imposing a penalty for the feeding of the slops to cows, as well as for vending the milk of cows so fed, amounted to an authoritative prohibition in both respects. (Jackson v. Shawl, 29 Cal. 267.) Besides the ordinance here contains express words of prohibition, and the prohibited acts became thereby unlawful acts.
3. And it thus appearing that the alleged libels were only in respect of an unlawful business carried on fry the plaintiff, it results that the action cannot be maintained, “ for I think (said Best, Ch. J.) that where a man complains of a libel written respecting an illegal transaction in which he is engaged, the illegality of that transaction is an answer to *250Ms complaints.” (3 Bing. 440; see, also, Hilliard on Torts, 278; Townsend on Libel and Slander, 197-8, and cases there cited.)
There is nothing in the other points.
The judgment must be affirmed, and it is so ordered.
Mr. Justice Riles did not participate in the foregoing decision.