Attitude of the United States Regarding Contraband of War, Visit and Search, etc.—Measures Affecting Neutral Trade: Control of Exports, Imports, and Bunker Coal; Black List of Firms1

1. For papers relating to these subjects and to Instructions for the Navy of the United States Governing Maritime Warfare, issued June 30, 1917, see Foreign Relations, 1918, Supplement 1, Vol. II.