This appeal is from a final judgment against plaintiff on a demurrer interposed by defendant to her amended petition. The cause was instituted in the St. Louis City Circuit Court, on the 13th day of September, 1907. The appeal was taken to the St. Louis Court of Appeals, and is here on an order of that court transferring the cause.
The petition alleges that plaintiff, on the 31st day of May, 1907, was the wife of James R. Kile; that the defendant is a corporation organized under the laws of Missouri engaged in business in the city of St. Louis in manufacturing and furnishing electricity; that the defendant owned, maintained and operated in said city, a system of wires strung on poles standing in the public streets and alleys of said city, and that said wires carried a high and dangerous yoltage of electricity; that said wires had been allowed and permitted by defendant, on the 31st day of May, 1907, to get into an unsafe and dangerous condition; that on said day the husband of plaintiff being engaged in the line of his duty as a lineman in the employ of defendant, under the directions and orders of defendant’s foreman, attempted to change *357the wires of defendant from one cross-arm on one of said poles, to a new cross-arm thereon; that while on said pole he came in contact with the wires of defendant which had been allowed to become defective, in insulation and in a condition dangerous to human life, and were so worn and defective as to offer no protection against the electricity on said wires, and he was then and there •and thereby, shocked, burned and killed.
The petition further alleges “that defendant did not take all the usual, available, necessary and reasonable precaution against the possibility of shock and injury to its employee, the said James R. Kile, while he was as aforesaid engaged in his work on said pole and its wires thereon at said time, in this: That said wires, being defective and dangerous, as averred, were not at that time and place, completely covered as they should and could have been by defendant with rubber tubing, circular loom or other safe insulation or insulating material, and thereby made and rendered safe to him, said employee, in his said work at said time and place; that the aforesaid defective and dangerous condition of defendant’s said wires which thus caused the death of plaintiff’s husband was well known to the defendant, or in the exercise of due and proper attention and diligence in the care thereof by defendant, should have been so known; that said deceased came to his death because of the negligence and misconduct of defendant, and without his own fault or negligence, and because of the wrongful act, negligence and default of defendant as aforesaid, the plaintiff has been damaged in the sum of five thousand dollars, for which she asks judgment.”
The trial judge filed a written memoranda of his opinion sustaining the demurrer. Prom this we gather that the court held the petition insufficient because of the relation between the defendant and the deceased. In other words, the court held the allegations of the petition sufficient if the action had been brought by some *358person not a servant. The petition plainly alleges that the defendant had allowed its wires to become defective, and the insulation so worn and defective as to offer no protection against the electricity on said wires, and that this defective condition was known to the defendant, or might have been known by the.exercise of proper care.
Ever since the case of Geismann v. Mo. Ed. Elec. Light Co., 173 Mo. 654, 73 S. W. 654, the rule has been settled that it is the duty of a company engaged in supplying electricity to patrons by use of wires strung along and across the streets of a city, to use every accessible precaution to insulate the wires at all points where people have a right to go, and to use the same care to keep the wires so insulated, and for a failure to take such precaution the company will be held liable to damages for personal injuries to persons coming in contact with such wires, unless such person was guilty of negligence on his part directly contributing thereto.
It is alleged in this petition that the company permitted the insulation to become so worn and defective as to offer no protection against the electricity on the wires, and that the deceased came to his death because • of this negligence of the defendant, and without his own fault or negligence.
It seems to us the petition contains every allegation necessary to state a cause of action. The respondent insists that the petition avers a duty beyond and in excess of that required by the master to his employee, and therefore, states no cause of action and is subject to demurrer on that ground. The portion of the petition against which this point is made is that part which states that it was the duty of the defendant to keep its wires safe for its employees to work with and among. If this entire allegation is stricken from the petition, there still remains a cause of action well stated.
The respondent maintains that the petition shows the injury to plaintiff’s husband was one assumed by him, and therefore shows no negligence of the master.
*359The law is well settled in this State that the servant never assumes the risk of injury as a result of his master’s negligence. [Curtis v. McNair, 173 Mo. 270, 73 S. W. 167; Tinkle v. Railroad Co., 212 Mo. 468, 110 S. W. 1086; George v. Railroad, 125 S. W. 196; Strickland v. Woolven & Co., 127 S. W. 628.]
If plaintiff’s husband, as a lineman whose duty it was to work with the defendant’s wires, knowing that the wires were uninsulated and charged with a high voltage of electricity, carelessly came in contact with them, then he was guilty of contributory negligence and the defendant is not liable for his death.
Contributory negligence is an affirmative defense, and as a general rule must be alleged in order to be available. But in cases where the plaintiff’s own testimony shows he was guilty of contributory negligence, which defeats his right to recover, defendant may take advantage thereof, though the answer contain no plea of such negligence. [Engleking v. Railroad, 187 Mo. 158, 86 S. W. 89; Kappes v. Brown Shoe Co., 116 Mo. App. 154, 90 S. W. 1158; Hebeler v. Railroad, 112 S. W. 34.]
This being true, it stands to reason that if the plaintiff’s petition on its face shows he was guilty of contributory negligence, then the court has the right to sustain a demurrer thereto. Does the petition in this case show a state of facts which would justify the court in holding that the plaintiff’s husband was guilty of contributory negligence as a matter of law? He was killed, and the law presumes that he was in the exercise of ordinary care. He had the right to rely on the presumption that the defendant had exercised ordinary care to keep its wires properly insulated, and in order to hold him guilty of contributory negligence it would be necessary to show that he knew, or by the exercise of ordinary care might have known that the defendant had failed to discharge this duty. The circumstances under which he *360was required to do tbe work that be was doing at tbe time be lost bis life, are not set forth in tbe petition, and it was not necessary that tbe plaintiff set them forth.
We are of tbe opinion that the allegations of plaintiff’s petition do not disclose tbe fact that tbe deceased was guilty of contributory negligence as a matter of law, and that tbe court erred in sustaining tbe demurrer, and we will reverse tbe judgment and remand tbe cause.
All concur.