The individual in international law — Nationality — Of corporations — Ottoman Bank — Criterion for determining nationality and law governing formation and operation of company — Siège social — Siège réel — Bank established under Imperial Ottoman Concession — Requirement that corporate seat be maintained in Turkey — Anglo-French Board of Directors and administration established in London and Paris — Whether Bank deemed of Turkish, English or French nationality — Whether dual national — Whether French courts possess jurisdiction in action concerning internal administration — The law of France.