In recent years the trust companies have shown a tendency, when acting as mortgage trustees, to recognize a greater moral responsibility than they at first were willing to bear. Trust companies did not, of course, intend to appear as in any way guaranteeing the bonds to which they certified, though that seems often to have been the erroneous opinion of the unthinking; but trustees now acknowledge themselves bound within the limits of the mortgage to use their influence to protect the interest of the bondholders. A trust company which should now allow the issue of unsecured bonds because of some glaring defect in the language of the mortgage, would not longer be morally excused by financial opinion, though perhaps held technically innocent.[92] As trustee under corporate mortgages and trust deeds, the trust company acts for the bondholders. It is customary for it to authenticate each bond issued subject to the provisions of the mortgage, to represent the bondholders in case of default, and to exercise such other functions as may be provided in the mortgage. A generation ago it was customary for a railroad to name one or more individuals as trustees of the mortgages executed to secure bond issues. The development of trust companies and their manifest advantages over individuals in such a capacity has resulted in their absorbing almost all this business. Trust companies are now generally appointed as trustees in corporation mortgages, and are also often named to succeed individuals who have died or resigned. The appointment is one of the most important and far reaching which the trust company can accept. Its name and reputation serve as an assurance that the transaction is a regular one, and entered into in good faith. Although the modern corporation mortgage is usually explicit in its terms to the effect that the trustee in no way guarantees the value of the security and assumes no liability except for its own negligence, yet the intimate connection between the trustee and the borrowing corporation in the minds of investors makes it necessary that care be taken not to assume trusteeships which may lead to a wrong use of the name and credit of the trust company. As trustee under mortgages securing bond issues, the title to the mortgaged property is vested in the trust company for the benefit of the security holders. The corporation owning the mortgaged property retains physical possession of it so long as the terms of the obligation are complied with, except in the case of securities pledged, which are usually lodged with the trustee. In case of default, however, it devolves upon the trustee to protect the interests of the bondholders, and this may necessitate the foreclosure of the mortgage and sale of the property.