This action is brought under the Pub. Sts. c. 52, for the failure of the city to keep its street reasonably safe and convenient for travellers. The cover had been removed from the top of a catch basin about two feet square, situated' about sixty feet from the front entrance of the plaintiff’s dwelling house, in the highway, close to the curbstone, at the outer edge of the sidewalk. In the middle of the afternoon of May first, the plaintiff missed her boy who was three years and eleven months old, and went out to look for him. When she reached the street she heard some children cry out that there was a child in the sewer. She went to where they were standing looking down into the catch basin from which the cover had been removed. She looked down and recognized her own child in the *234water. With the assistance of another woman who took hold of one of her hands, she got down into the catch basin and rescued the child, who was taken out unconscious and was almost drowned. There was dirty water and sewage about three feet in depth in the catch basin, and she was in it to her waist while rescuing her boy. As a consequence of the exposure she contracted rheumatic fever, and she now seeks to recover the damages which were thus caused.
The liability of the city under the statute which the plaintiff invokes is only to travellers. If we assume that the plaintiff was a traveller while looking for her child and while walking to the catch basin to see what was the condition there, she voluntarily gave up her position as a traveller when she abandoned the use of the street for travel, and passed from the surface of it, which alone was fitted and intended for travel, and descended into the catch basin below. Laudable as was her motive, she ceased to be a traveller, and put herself in another relation to the defendant, in reference to which the law imposes no liability upon cities and towns. The case in this aspect of it is similar to Harwood v. Oakham, 152 Mass. 421, and the principles stated in that case are applicable to this.
The defence may be maintained on another ground. The only defect in the street was the absence of the cover of the catch basin from its place. But that defect was not the direct and proximate cause of the plaintiff’s injury. The cause was her voluntary act, undertaken with full knowledge that the cover of the catch basin was not in its place. On account of the displacement of the cover a condition had resulted, in reference to which the plaintiff determined to make the descent. The absence of the cover was a condition attending the plaintiff’s exposure to the cold water, not the cause of it.
Judgment on the verdict.