166—Supplemental powers of Court
For the purposes of this Act, the Court of Appeal may, if it thinks it
necessary or expedient in the interests of justice—
(a)
order the production of any document, exhibit or other thing connected with
the proceedings, the production of which appears to it necessary for the
determination of the case; and
(b)
order any witnesses who would have been compellable witnesses at the trial to
attend and be examined before the Court, whether they were or were not called
at the trial, or order the examination of any such witnesses to be conducted
in the manner provided by rules of court before any judge of the Supreme Court
or before any officer of the Supreme Court or justice of the peace or other
person appointed by the Court of Appeal for the purpose, and allow the
admission of any statements so taken as evidence before the Court of Appeal;
and
(c)
receive the evidence, if tendered, of any witness (including the appellant)
who is a competent but not compellable witness; and
(d)
where any question arising on the appeal involves prolonged examination of
documents or accounts or any scientific or local investigation which cannot,
in the opinion of the Court of Appeal, conveniently be conducted before the
Court, order the reference of the question in the manner provided by rules of
court for inquiry and report to a special commissioner appointed by the Court
and act on the report of any such commissioner so far as it thinks fit to
adopt it; and
(e)
appoint any person with special expert knowledge to act as assessor to the
Court of Appeal in any case where it appears to the Court that such special
knowledge is required for the proper determination of the case; and
(f)
exercise in relation to the proceedings of the Court any other powers which
may for the time being be exercised by the Supreme Court on appeals or
applications in civil matters; and
(g)
issue any warrants necessary for enforcing the orders or sentences of the
Court,
but in no case will any sentence be increased by reason of, or in
consideration of, any evidence that was not given at the trial.