Section XIV-3: Excessive rate - Forfeiture of interest - Recovery of double interest.

  The taking, receiving, reserving, or charging a rate of
interest greater than is allowed by the preceding section, when
knowingly done, shall be deemed a forfeiture of the entire
interest which the note, bill, or other evidence of debt carries
with it, or which has been agreed to be paid thereon.  In case a
greater rate of interest has been paid, the person by whom it has
been paid, or his legal representatives, may recover from the
person, firm, or corporation taking or receiving the same, in an
action in the nature of an action of debt, twice the amount of
the interest so paid: Provided, such action shall be brought
within two years after the maturity of such usurious contract:
Provided, However, That this section may be subject to such
changes as the Legislature may prescribe.