Question juridique clé
Whether the cantonal decision refusing to appoint an arbitrator was arbitrable by appeal under Geneva procedural law.
Solution extraite
The Geneva courts’ interpretation excluding an appeal was defensible and not arbitrary.
Motifs extraits
The phrase 'in last instance' in Art. 458 LPC Gen. was ambiguous; historical and teleological interpretation supported treating appointment and refusal decisions alike, with direct federal review preserving efficiency.