Gems: From Bangkok to Lausanne. Belgian Jurist Gustave Rolin-Jaequemyns’ Letter to his French Colleague Ernest Lehr

International audience ; The section ‘Gems’ consists of short articles which present sources that might be of interest to migration researcher. In this Gems: a letter sent from Bangkok on 23 August 1896 by Gustave Rolin-Jaequemyns to his French colleague Ernest Lehr. We show that this document enables us to highlight the international networks in which international law scholars were involved. It reveals the professional concerns and problems of the lawyer, but also the social reality of his daily life.