Treaties — Interpretation — Negotiations Subsequent to the Conclusion of the Treaty.

Arbitration — Duality of Jurisdictions — Presumption Against.

Arbitration — Procedure — Power to Appoint Experts.

Treaties — Interpretation of — Interpretation of Disputed Clause by reference to Similar Provisions in Other Treaties — Negotiations Subsequent to the Conclusion of the Treaty — Inadmissibility of Interpretation Depriving a Provision of its Effect — Distinction between Interpretation and Application of a Convention — The Franco-Polish Convention of 1922 — Duality of Jurisdictions — Power of Arbitrator to Appoint Experts.