The commissioners continued to exist following the passing of the
Act of Union in 1707. From 1718 they became responsible, along with
justices of the peace, for county roads and bridges, and in 1832 they were charged with raising "rogue money" for the keeping of the peace. In many cases the commissioners appointed special constables for all or parts of their counties, and by the
Police (Scotland) Act 1857 they were required to establish a county police force, in all areas outside
police burghs, from 1858. In 1862, the functions and property of the
Commissioners of Highland Roads and Bridges were transferred to the commissioners of supply. In 1890, as a result of the
Local Government (Scotland) Act 1889, virtually all of the powers and duties of the commissioners passed to the newly created county councils. The commissioners continued to exist, however, meeting once a year to elect a convener and to appoint members to the joint standing committee that was responsible for the county constabulary. The other members of the committee were nominated by the county council, and it was chaired by the
sheriff of the county. Commissioners of supply were finally abolished in 1930 by the
Local Government (Scotland) Act 1929. ==References==