If the proceeds of the bonds for any reason are less than the cost of the works, additional bonds may in like manner be issued and sold to provide for the amount of the deficit, but not to exceed the amount necessary to complete the works according to the original plans and specifications. Such deficiency bonds shall be deemed to be the same in all respects as the original issue, and shall be entitled to payment, without preference or priority over the bonds first issued, and shall be disposed of in like manner.