Decree affirmed. The decedent Stone, recreation director of Easthampton, had been engaged in batting out baseballs to a local American Legion baseball team on Sunday, June 5, 1955, when he complained of stomach pains. He died shortly thereafter. The respondent appeal board, after several hearings, reversed the decision of the Easthampton contributory retirement board on July 17, 1959, ruling that Stone died of a heart attack while engaged in the performance of his duties as a recreation director and that his widow was entitled to accidental death benefits under G. L. c. 32, Section 9. On a petition for review brought under G. L. c. 30A, Section 14, the Superior Court remanded the matter to the appeal board for the taking of additional medical evidence on the cause of the heart attack and its relation to the duties of Stone. At the hearing thus ordered certain medical testimony was introduced following which the appeal board found that "the heart attack which resulted in the death of . . . Stone was a natural and proximate result of a personal injury sustained as a result of and while in the performance of his duties within the meaning of the statute." The petitioners appeal from the decree of the Superior Court affirming the decision of the appeal board. There is no error. There was substantial medical evidence at the last hearing before the appeal board sufficient to warrant the finding of the relationship between the exertion of batting out baseballs and Stone's death. See Teachers' Retirement Bd. v. Contributory Retirement Appeal Bd. 346 Mass. 663. Compare State Bd. of Retirement v. Contributory Retirement Appeal Bd. 342 Mass. 58. There was also substantial evidence that part of Stone's duties as recreation director consisted of the activity in which he was engaged immediately prior to his death.

Exceptions overruled. This is an action of tort to recover damages for personal injuries alleged to have been sustained by the minor plaintiff, Robert, on May 24, 1957, in the defendant's nursery. At the time of the accident Robert was four years and four months old. He was found "lying beside the slide." It was described as "a regular slide that one usually finds in playgrounds." We have examined the record and are satisfied that the evidence was insufficient to remove the cause of the accident from conjecture. The evidence was also insufficient to prove that supervision or lack of supervision by the defendant was the proximate cause of Robert's injury. The instant case is clearly distinguishable from Sullivan v. Hamacher, 339 Mass. 190, and others cited by the plaintiff. There was no error in the direction of a verdict for the defendant.

Interlocutory and final decrees affirmed. This is a bill in equity brought in the Land Court for the determination of the northern boundary of the plaintiff's land. The trial judge made detailed "Findings, Rulings and Order for Decree." The plaintiff's only argument is that the judge was in

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error in denying his motion for a new trial and his motion for "additional report." The evidence is not reported. We have examined the record including the exhibits and are unable to perceive any abuse of discretion by the trial judge in the denial of the plaintiff's motions. We do not think any citations are required on this issue.