Teaching public international law at Cambridge from 1902, Pearce Higgins was named a lecturer at the
London School of Economics in 1908 (replacing
L. F. L. Oppenheim). A specialist in maritime law, he also taught at the
Royal Naval War College and the
Royal Naval College, Greenwich. During
World War I, he served as an adviser in international law and
prize law to
Sir John Mellor, the Procurator General and Treasury Solicitor (head of the government legal service). He was appointed
Whewell Professor of International Law at the
University of Cambridge in 1920 (again succeeding Oppenheim), and a fellow of
Trinity College, Cambridge in 1926. He was also Professor of International Law at
The Hague Academy of International Law. Pearce Higgins was an Associate of the
Institut de Droit International from 1922, a Member from 1924, and President from 1929 to 1931. He became a member of the
Permanent Court of Arbitration at
The Hague in 1930. == References ==