International law owes much to American judges and to American jurists. The list of those who have contributed to its advancement is not short and includes the names of Marshall, Story and Field, Kent, Wheaton, with his able commentators, Dana and Lawrence, Halleck and Lieber and, among recent writer’s, Taylor, Moore and Snow. Although his name is not connected with a general treatise on the subject of public international law, it may be doubted whether any of his fellow-workers in that field have rendered a more important service to humanity and to international good neighborhood, than has Dr. Francis Lieber in his memorable “Instructions for the Government of the Armies of the United States in the Field.”