421. The expert must, before the expiry of the delay fixed by the court, file in the office of the court a signed report of his proceedings and conclusions, to which is annexed evidence of his having been sworn and the documents and testimony which he has taken.
The report must be sufficiently reasoned and detailed to enable the court to appreciate the facts.
If there are several experts and they are unanimous, they may make one and the same report.
1965 (1st sess.), c. 80, a. 421.