Stephen Johnson Field,
Thompson v. White Water Valley Railroad Company…
“ Here the same rule applies; and not only the rails, but those permanent fixtures which are essential to the successful operation of the road, become a part of the property of the company, as much so as if they had existed when the mortgage was executed. The doctrine that a vendor, not taking security for the price of realty sold by him, holds in equity a lien upon the property for such price, is not controverted, but it has no application to the present case. ”
