evidence. A book kept in a public office, not appertaining to a court, authorized by the law of any state. 2. An exemplification, of any such office book, when authenticated under the act of congress of 27th March, 1804, Ingers’ Dig. 77, is to have such faith and credit, given to it in every court and office within the United States, as such exemplification has by law or usage in the courts or offices of the state from whence the same has been taken.