Legal > Powers and duties attributed to the League of Nations by international treaties

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militarisation of a zone on each side of the frontier separating
Turkey from Bulgaria and from Greece, requires these three Powers
to bring before the Council any complaints they may have regarding
the observance of its provisions.
2. Settlement of the terms of submission to arbitration.
In the two above mentioned instruments relating to railways
(art. 36) and maritime ports (art. 22) the Council, in default of
agreement between the parties, has power to settle itself the terms
of the submission to arbitration (special agreement-compromis).
3. Advisory opinions, conciliation.
Provision for obtaining an advisory opinion from a League tech¬
nical committee, before sending disputes as to the interpretation
or application of the instrument to arbitration or judicial settle¬
ment, is made by the abovementioned instruments concerning
railways (art. 35) and maritime ports (art. 21) and by the following
other League instruments and conventions:
Statute on freedom of transit, 20 April, 1921, article 13. (Hudson,
I, p. 631; 7 Treaty Series p. 12).1
Statute on the regime of navigable waterways of international
concern, 20 April, 1921, article 221 (Hudson, I, p. 645; 7 Treaty
Series p. 36).
Convention on the development of hydraulic power affecting
more than one state, 13 December, 1923 (Hudson II, p. 1182;
36 Treaty Series p. 75).
Convention on the transmission in transit of electric power,
9 December, 1923, article 12. (Hudson, II, p. 1173; 58 Treaty
Series p. 315).
Convention on the simplification of customs formalities, 3 Novem¬
ber, 1923, article 22. (Hudson, II, p. 1094; 30 Treaty Series p. 371).
Convention on traffic in opium and drugs, 19 February, 1925,
article 32. (Hudson III, p. 1589; 81 Treaty Series p. 317).
Convention concerning economic statistics, 14 December, 1928,
article 10. (Hudson IV, p. 2575; 110 Treaty Series p. 171).
1 Annexed to a convention of the same date.