The delimitation of the southern frontier was in 1909 referred to the king of Spain as arbitrator between Great Britain and Germany.
The arbitrators who are to determine this difference are, unless otherwise specially agreed, to be chosen from the general list of members in the following manner: - each party is to name two arbitrators, and these are to' choose a chief arbitrator or umpire (sur-arbitre).
The arbitrator ex compromisso sumptus, like the judicial arbiter, was expected to take account of equitable considerations in coming to a decision.
Buchanan, United States minister at Buenos Aires, serving as arbitrator, reached a decision on the Atacama line north of 26° 52' 45" S.
And Theodosius I., took a great step forward, by which the bishop ceased to be a mere legally indicated arbitrator by consent in secular causes, and became a real judge.