The plaintiff, a servant of the defendant, was engaged in cleaning the tubes of a horizontal cylindrical steam boiler. To do this he had to stand on two planks, about 2x12, resting at one end on a wooden horse standing directly in front of the boiler, and at the other end upon a joist placed there for that purpose. The plaintiff had to push a steel brush at the end of a long handle forward and back in these tubes of the boiler, and so was *208obliged to walk forward and back on the planks. While so doing he says one of the planks tilted sidewise, and, the heel of his left foot catching between the planks, he lost his balance and fell to the ground, a distance of some 4% feet. The proof is that the planks, which were brought into court and shown to the jury,, were somewhat warped, so that, if laid upon their convex sides, they had a tendency to roll or wabble. This particular horse and these particular planks, no others being furnished by the defendant, had been used in this way in the cleaning of the boiler tubes for some three years, and the plaintiff had used them twice before the accident.

The action was at common law, which imposes the duty on the master to exercise reasonable care in furnishing safe appliances to his servants. On the other hand, the servants assume the risk of obvious defects. No conclusive inferences could be drawn from the proofs, so that the question of the defendant’s negligence and of the plaintiff’s, assumption of defects could not be disposed of by the court as matters of law. They were properly submitted to the jury, and, taking the whole charge and the answers to the requests to charge together, we think the jury was fairly instructed as to the law.

Judgment affirmed.