paragraph 233 in volume 2, chapter 13, Matters of Jurisdiction
It can occur that, despite the wishes of the parties, jurisdiction in the objective sense has not been effectively conferred on the Court or in the subjective sense ought not properly to be exercised by it. If the issue is not raised by the parties, then it is believed that the Court should raise it proprio motu as late as possible: it certainly should not interfere with the proper airing of the case in the written proceedings which may themselves lead to the necessary clarificatio…