Mass. Gen. Laws ch. 47 § 6
Current with Act changes effective as of September 9, 2024
Unless all the towns interested in such infirmary agree to choose a different number, each of them shall choose three members of the joint board; and upon the death of a director, or his removal from the place for which he was chosen, the vacancy may be filled by such town. If a town neglects to choose directors, those chosen by the other towns shall have charge of the infirmary.
Mass. Gen. Laws ch. 47, § 6