Section 5. The salaries of county commissioners, payable by their respective counties in full for all services performed by said commissioners except as otherwise provided, shall be as follows:—
Middlesex....... $9,505.16
Essex....... 8,799.73
Norfolk....... 8,799.73
Worcester....... 8,799.73
Bristol....... 7,388.87
Hampden....... 7,388.87
Barnstable....... 6,683.44
Berkshire....... 6,683.44
Plymouth....... 6,683.44
Franklin....... 5,272.58
Hampshire....... 5,272.58
Dukes....... 2,963.90