The interest coupons may be substantially in the following form:
No.________
$_______
The county treasurer of ____ County, California, will pay to the holder hereof on the ____ day of ____, 19___, at his office in the County of ____ the sum of $____ in lawful money of the United States out of the funds of Reclamation District No. ____
for interest on refunding bond of said district, No. ___.
County Auditor