WHEELER, J.

The plaintiff's intestate, Genevieve Saunders, fifteen years old, was employed by The New England Collapsible Tube Company on the third floor of its factory. A number of girls worked on this floor with the deceased. The factory building consisted of several floors, and it was necessary for the girls employed in the factory to go from one floor to another for the purpose of getting material as needed, or for the purpose of taking finished work to another department. It was customary for the girls so employed, daily, to use the elevator for this purpose, and they also used the elevator in going to work in the morning, or at noontime, and in leaving their place of employment at night.

The decedent used this elevator in this way during the period of her employment with the defendant.

On October 24th, 1918, and during working hours, the decedent left her bench and went to the elevator and leaned her head over the gate, and the elevator descending crushed her head between the top of the gate and the bottom of the elevator.

No testimony was offered before the Commissioner that at the time of her injuries the decedent was about to use the elevator in the course of her employment, or that at this time she had occasion to so use the elevator.

The Commissioner awarded compensation to the claimants.

The Superior Court, on appeal, held that the Commissioner erred in holding that the injuries arose out of and in the course of the decedent's employment, and in requiring the defendants to prove that the injury did not arise out of and in the course of the employment. The court set aside the award because it could find no evidence from which it could be found that the accident arose in the course of the employment; and the court interpreted the Commissioner's finding that "there was no evidence to show that this Saunders girl had reason to use this elevator on this particular day, at this particular hour, nor is there evidence to the contrary," — as meaning that there was absolutely no evidence from which the Commissioner could find the ultimate fact that the accident arose out of and in the course of her employment.

The memorandum of decision is made a part of the finding, hence finding and memorandum are to be read together as a whole. So read, we think it clear that by the words, "there is no evidence," the Commissioner intended to convey the meaning that there was no testimony, no statement either from a witness or in a written document of this fact; that is, that there was no direct evidence, as it is called in common speech, of this fact. But he did not intend to exclude from consideration the realm of inference, and it was in reliance upon the inference to be drawn from facts in evidence that the Commissioner reached his conclusion.

The court was in error in thinking the Commissioner required the employer to assume the burden of proving that the injury did not arise out of and in the course of the employment. The burden of proof, in a claim for compensation under the Workmen's Compensation Act, is upon the claimant to prove the statutory essentials of his case. He must establish by competent evidence that the injuries for which he seeks compensation arose out of and in the course of his employment. Sponatski's Case, 220 Mass. 526, 108 N.E. 466; Westman's Case, 118 Me. 133, 106 A. 532, 535. What the Commissioner did was everyday practice with a trial judge: he found the fact in issue as an inference of fact drawn from other facts in the testimony.

The appeal fairly raises the question whether the inference drawn was unjustifiable. If it was an inference which a reasonable man could not draw in a reasoning way, the finding cannot stand, for it would then be so unreasonable as to justify judicial interference. Powers v. Hotel Bond Co., 89 Conn. 143, 93 A. 245. No one saw the accident, but that fact is not fatal to a finding of how it occurred. It occurred within the period of the employment, at a place where the decedent might reasonably have been, and where her work required her frequently to be. Her duties required her to use the elevator in going from floor to floor for the purposes of her employment. If she was so engaged she was reasonably fulfilling the duties of her employment. Whether she was so engaged at the time of her injury, seems to us an inference which cannot be said to be an inference of a character which the reasonable man could not draw. Is it more likely than otherwise that one injured during the period of employment and in a place where she had a right to be, was at this time engaged in her employment, or that she was engaged upon some matter of her own and apart from her employment? There is a natural presumption that one charged with the performance of a duty, and found injured at the place where duty may have required him to be, is injured in the course of and as a consequence of the employment. We think it more likely than otherwise that the decedent was doing her duty when injured, and that this is a reasonable inference to draw in the absence of evidence to the contrary. Facts may be found proven of which there was no direct proof but which are inferences of fact drawn from facts which are in proof. Sliwowski v. New York, N. H. H.R. Co., 94 Conn. 303, 108 A. 805. It may be the duty of the trier to infer what one has done or left undone, although there be no positive testimony of this. And when the appellate court passes upon whether this duty has been judicially performed by legal standard, it cannot inquire whether it would have reached the same result; it must limit its inquiry to the ascertainment of whether the inference is so unreasonable as to be unjustifiable. It is the right of every trier to infer what one's conduct has been in the circumstances, even though the inference reaches beyond the positive testimony in the case. Bunnell v. Berlin Iron Bridge Co., 66 Conn. 24, 36, 33 A. 533; Union Bank v. Middlebrook, 33 Conn. 95, 100; Dubuque v. Coman, 64 Conn. 475, 479, 30 A. 777.

The appellants urge as one ground of error, the use by the court of the evidence for the purpose of determining the validity of the award. They say that when the court denied the motion to correct, the limited purpose of the evidence had been satisfied. The motion to correct was not filed in the Superior Court and hence was not before the court. The evidence was before the court to enable it to determine whether there was any evidence that the injuries of the decedent arose in the course of and out of her employment. The court held that there was not. "Here," says the court, "the theory that the decedent was injured while on some purpose of her own, outside of her employment, is equally consistent with the theory that she was acting within her employment." Though this were true, it was the province of the Commissioner to determine which theory was supported by the evidence; and if the evidence reasonably supported either theory, he might adopt that theory and the Superior Court on appeal could not disturb his decision upon that ground. The Superior Court does not weigh evidence in this class of cases; it may determine whether the finding of the Commissioner should be corrected or not, or whether there was any evidence to support the conclusions reached; and when it has done this, its control over the evidence ceases.