ACKERSDYK, JOHN, born at Bois-le-due, 20th Oct. 1790, studied law at Utrecht, and graduated there in 1810. He died 1861. First a lawyer, afterwards a judge, he was appointed in 1825 a professor at the University of Liege, and in 1830, after the Belgian revolution, a professor at Utrecht. Here from 1849 till 1860 he taught eoonomics.
During his long and frequent travels Aekersdyk collected a vast mass of information which he availed himself of to enrich his lectures. His writings are not very numerous, being principally short essays in periodicals. The following are specially deserving of notice :