Holy Alliance, [66], [68], [196], [413], [544], [596]
Holy Roman Empire, origin of doctrine of servitudes in the, [275]
cannot be party to international negotiation, [161], [441]
receives ambassadors of first class, [444]
Hostages as a means of securing the performance of treaties, [566]
Hostilities:
convention relative to the opening of, [593]
convention regarding enemy merchantmen, [593]