After some eight years of service as a member of the Metropolitan Police Department, this appellant was retired for disability upon an annuity of 40 per cent of his basic salary. D.C. Code § 4-526 (1961). Unsuccessfully he sought additional relief in appropriate administrative proceedings, after which he asked the District Court to compel the Commissioners “to order the plaintifl: retired for disability incurred during the performance of duty.” Upon consideration of the administrative record and of oral stipulations at the court hearing and after argument of counsel, the District Judge filed findings of fact, conclusions of law and an order that the complaint be dismissed.

On this appeal we have considered the entire record as made available to this court. We find no substantial basis for disturbing the conclusion of the Police and Firemen’s Retirement and Relief Board as affirmed by the Commissioners that appellant’s disability was not due to injury or to a disease contracted in the *798 performance of duty, or to an injury or disease which was “shown to have been aggravated by the performance of duty.” D.C. Code § 4-527 (Supp. IV, 1965). Accordingly, we find no error in the findings and conclusions of the District Judge, and his order dismissing the complaint must be

Affirmed.