Plaintiff sued defendant to recover damages for injuries sustained by him while in its employ by reason of its negligence. He recovered judgment, and this appeal is taken from the order of the court denying defendant a new trial.

Plaintiff showed that the defendant had entered into a written contract with the Olympic Salt Water Company, a corporation, to construct a pier on the beach near the Cliff House, in the city and county of San Francisco. The work of construction was commenced by the defendant under the contract. M. B. Stone was the superintendent of the defendant company and in charge of the work. Plaintiff was employed by the company through its superintendent, and went to work on the fifth day of July, 1893, and continued to work *420 on the pier until he received the injuries complained of. It was not disputed upon the trial that plaintiff was employed for the defendant by its superintendent. Upon the twenty-first day of July, 1893, the work of pile-driving for the construction of the pier was in progress. A pile had been driven too deep, and the plaintiff, with other men, was sent by the superintendent to lay a foundation for a jack-screw to raise the pile. This required the plaintiff to work under the piledriver. Plaintiff was engaged in carrying and arranging blocks upon which to place the jack. The blocks were supplied from a place ten or twelve feet above, from which height they were thrown down to the workmen below. M. B. Stone, the superintendent, was supervising the work. Plaintiff, while stooping down to pick up a block, was struck by one thrown from above. The man above asked before he threw the block if all was clear below, and was answered in the affirmative by the superintendent and others, and the block was allowed to fall. The superintendent, when he gave his answer, was standing within a few feet of the plaintiff, and there was nothing to obstruct his view of him. It appears also that Stone noticed the plaintiff the instant after he had given the order, and called to the workman above to hold. The time was too short; the block was already falling.

This evidence certainly leaves the question one for the jury as to whether or not M. B. Stone was negligent in giving the order, and, from the jury’s determination, it must be concluded that it deemed he was. That Stone was the superintendent in charge of the work when it was commenced, there is no room for doubt. The defense, however, undertook to show that before the time of the injury it had assigned the contract to Stone, and that thereafter, and at the time of the injury, it was no longer in charge of, or connected with, the labor of construction, and that Stone was carrying on the work as an independent contractor upon his own individual responsibility. Plaintiff in turn met this by evidence to prove that Stone continued at least to be the osten *421 sible agent of defendant in charge of the work. In this he was quite successful. He showed that no notice was ever given to him of the pretended change in his employers; that the work was conducted under the direction of Stone after the date of the contract in precisely the same manner as that which characterized it before. He showed that the time-book kept for the work and the time checks issued to the men were upon printed blank forms used by the corporation, and that the workmen presented their vouchers upon the printed forms of the company to the office of the corporation, and there received their money as they had been wont to do. In short, after the date of the contract, whereby it is claimed that the sole management and control of the work was turned over to Stone, the work was in all respects conducted by Stone as it had been during the time preceding. The evidence of the time-book and time checks, of the payment of the laborers, and of the general conduct of the work, was all admissible to establish the ostensible agency. (Southern Pac. Co. v. Wellington, 36 S. W. Rep. 1114 ; Forbes v. Willamette etc. Co., 19 Or. 61 ; 20 Am. St. Rep. 793 .) An agency is ostensible when the principal intentionally, or by want of ordinary care, causes a third person to believe another to be his agent, who is really not employed by him. (Civ. Code, sec. 2300.) There is shown in this case an existing agency, a secret termination of it under circumstances designed to transform the agent into the principal, and this, without any knowledge or means of knowledge of the changed conditions afforded to those who had taken original employment under the defendant. The doctrine of ostensible agency draws its support from the equitable principles of estoppel in pais, and it would not be easy to call to mind a clearer instance of ostensible agency than that here presented by the evidence.

But appellant makes reply, that if the agency was ostensible, the plaintiff should so have pleaded, under the general rule that where a cause of action rests upon *422 estoppel, the estoppel must be pleaded. To this, however, it need only be said that a party is not bound to plead an estoppel where he is without knowledge that his demand must ultimately rest upon it. Estoppel in this case was not the foundation of the plaintiff’s claim. He believed, and was given cause to believe, that Stone was the actual agent. By the evidence of the defense he was driven to rest upon proof of an ostensible agency, and this proof, under the circumstances, he was clearly entitled to make without a direct pleading to the point. In this respect the case is not dissimilar to that of Blood v. La Serena Land etc. Co., 113 Cal. 221 , where the subject is considered.

It is further contended by appellant, however, that under ostensible agency a principal is not bound for any of the torts of the agent, and reliance is had in this regard upon section 2334 of the Civil Code, which declares that a principal is bound by the act of his agent, under a merely ostensible authority, to those persons only who have in good faith and without ordinary negligence incurred liability or parted with value upon the faith thereof. But the preceding section, 2330, provides: “An agent represents his principal for all purposes within the scope of his actual or ostensible authority, and all ths rights and liabilities which would accrue to the agent from transactions within such limit, if they had been entered into on his own account, accrue to the principal.” Section 2334 deals solely with rights and liabilities arising out of contract. It was not designed to destroy the effect of the universally accepted principle of law declared in section 2330, and limit the responsibility of the principal only to the contractual liabilities arising from the ostensible authority. No reason exists why the principal under an ostensible authority which through fault or negligence he has permitted, should be exonerated from liability for the torts of the ostensible agent, any more than would the principal in the- case of an actual agency; and, as has been said, the general rule is as declared in section 2330.

*423 But it is not for all torts or acts of negligence of the agent that the master is responsible to a servant or employee injured thereby. The master’s duties to his employees are three: first, to supply them with suitable appliances for their labor; second, to afford them a reasonably safe place in which to perform their tasks; and, third, to use due care in the selection of fit and competent fellow employees. If in any duty enjoined by law upon the master there is a failure of performance as a result of which an employee'is injured, the master is responsible, whether he undertook the performance of that duty personally, or whether it was delegated, by him to the least and lowest of his employees. For in the performance of such duty the general rule that an employee may not obtain compensation from the master for injury resulting from the act of a fellow employee has no application. Upon the contrary, however, where the injury has resulted from the omission or negligent performance of an act which it was no part of the duty of the master to perform, and in the doing of which no duty of the master was being performed, then the person through whose negligence the injury has resulted, whatever may be his grade or rank of employment, is not as to that act the representative of the master, and the responsibility for injury is upon the individual actor and not upon the employer.

These propositions of law are firmly established. In Daves v. Southern Pac. Co., 98 Cal. 19 , 35 Am. St. Rep. 133 , the first proposition is elaborately considered by this court in bank, and it is said: “If the act was one which it was the duty of the employer to perform toward its servants, and one of them negligently performed it to the injury of another servant in the same common employment, then the offending servant in the performance of such duty acted as the representative or agent of his employer, for which the employer is responsible.” To like effect are the cases of Elledge v. National etc. Ry. Co., 100 Cal. 282 ; 38 Am. St. Rep. 290 ; Nixon v. Selby etc. Co., 102 Cal. 458 ; Mullin v. Horse *424 Shoe Co., 105 Cal. 77 ; St. Louis etc. Ry. Co. v. Needham, 63 Fed. Rep. 107; Atchison etc. R. R. Co. v. Moore, 29 Kan. 632 ; Baltimore etc. R. R. Co. v. Baugh, 149 U. S. 368, 387 .

The second proposition is thus clearly enunciated in the case of Callan v. Bull, 113 Cal. 593 : “The liability of the appellant is to be determined by the character of the act through which the injury was sustained, or of his functions in reference to the act, and not by the rank or station of the employee under whose direction the act was performed. Where the negligence is in an act which the master must personally perform, the person to whom he delegates its performance is his agent, and the master is responsible for the negligence. If, on the other hand, it is an act which may be delegated to another, or may be performed by an employee, the person by whom it is performed is a fellow-servant with the other employees, irrespective of his rank, and the master is not responsible to them for his negligence in its performance. Whether one acts as a fellow-servant or as a representative of the master is a question of law.” In addition to the numerous authorities there cited to support the text, there may be added the very instructive cases of Crispin v. Babbit, 81 N. Y. 516 ; 37 Am. Rep. 521 ; Loughlin v. State, 105 N. Y. 159 ; Cullen v. Norton, 126 N. Y. 6 , and Moody v. Hamilton Mfg. Co., 159 Mass. 70, 72 ; 38 Am. St. Rep. 396 .

Under the facts of the case at bar it is quite apparent that Stone, in answering to the call of the workman that all was clear below, was not performing on behalf of the defendant corporation any duty by law imposed upon it. The employees were engaged in a task within the scope of their employment. It cannot be successfully contended that the appliances were not suitable, the place of labor not reasonably safe for the character of the work, or the fellow employees not fairly competent and careful. If, as suggested in the brief of respondents, the workman above should have himself looked and not trusted to the declaration of the men *425 below, then clearly the act was the result of negligence of a fellow employee. But, aside from this, in the absencé of the superintendent, it would have been the duty of the men to have proceeded with this particular work. Others of the laborers, it appears from the evidence, made like answer as did the superintendent to the call of the workman above. It was competent and proper for them to do so. In adding his voice to the rest the superintendent performed no duty due to the employees from the master, and was in the act but a fellow-servant of the injured man.

The judgment and order are therefore reversed and the cause remanded.

McFarland, J., and Temple, J., concurred.