It shall be the duty of the Clerk to keep the journal of the proceedings of the Council, and to have charge of and preserve the records, papers, documents, contracts, etc., of the Town. He shall attend the Mayor in all his examinations, issue his orders, swear witnesses, and perform all the duties of a Clerk in the Council and Mayor's Court. He shall receive such compensation for his services as may be fixed by the Council, which shall not be increased nor diminished during his term of office.