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 may also state his award in whole or in part as a special case (ib.
One arbitrator shall be selected using AAA procedures.
Buchanan, United States minister at Buenos Aires, serving as arbitrator, reached a decision on the Atacama line north of 26° 52' 45" S.
The delimitation of the southern frontier was in 1909 referred to the king of Spain as arbitrator between Great Britain and Germany.