Manner of seizure not to be inquired into on trial before court or on appeal to Supreme Court
120.  On any trial before any court and in any proceedings on appeal in the Supreme Court, relating to the seizure of goods subject to forfeiture under this Act, the court shall proceed to the trial or hear the appeal on the merits of the case only, without inquiring into the manner or form of making any seizure, except in so far as the manner and form of seizure may be evidence on such merits.