732. Appropriation of payments in current account.

Prima facie, in the case of a mortgage to secure a current account1, unless there has been express appropriation by either party2, sums paid by the mortgagor are applied in satisfaction of the items on the debit side in order, beginning with the earliest in date3. In as much, however, as the security does not, for purposes of priority as against a second mortgage, include advances made after notice of the second mortgage