Proceedings and exhibits shall be entrusted to the members of the escort.
If, in this case, exceptional expenses have had to be advanced by the members of the escort, they shall, in order to obtain reimbursement, enter the amount thereof on their statement of account.
If, by reason of weight or volume, the objects cannot be transported by the members of the escort, they shall be transported, at the written request of the magistrate, either by rail, or by a contractor, or by any other more economical means, subject to suitable precautions for the safety of the said objects.