Trust companies may be regarded as investment institutions, for they also contribute permanent capital to industrial and railroad corporations. These investment activities of trust companies are more or less ancillary to their regular fiduciary business, for they are called upon to invest large sums of money in administering various kinds of trusts. A trust company may act in behalf of another corporation or of a person, and so it handles either a corporate or an individual trust. In executing corporate trusts, the company may act in such capacities as manager or member of an underwriting syndicate, fiscal agent, trustee under corporate mortgage, assignee, and receiver. For the individual, the trust company may serve as executor under a will or administrator under court order, guardian, and general trustee. These classes of trusts are described in full in Chapter XV.