Question juridique clé
Whether the public-law appeal against the cantonal incident decision on recusal of an expert was admissible.
Solution extraite
The appeal was admissible because cantonal law made the recusal decision final and Art. 87 OJ allowed separate challenge of incident decisions on recusal.
Motifs extraits
A request to recuse a court expert falls within the category of recusal decisions under Art. 87 OJ; the cantonal ruling was rendered as a final cantonal instance under Art. 86 OJ.