Section 68. The reporter shall receive from the commonwealth a salary to be fixed by the chief justice of the supreme judicial court, with the approval of the governor and council, and shall be allowed by the commonwealth for clerical and incidental expenses of his office such sums as shall be appropriated therefor. These amounts shall be in full compensation for his services and said expenses. All fees received by him for copies of opinions, rescripts and other papers shall be paid by him quarterly to the commonwealth, with a detailed statement thereof.