Peter, by will, made the following bequests: (a) $500,000 to my daughter, Marie, and I trust that she will provide for the children out of this. (b ) $250,000 to my son, John, on trust to use the income for such period as the law allows for the provision of summer outings for the employees and their relatives and/or dependants of my old company, Nuts and Bolts Pty. Ltd. (C) $100,000 to my sister Eileen, confident that she will pay a reasonable sum each year to my Aunt Martha for her maintenance. (d) My collection of old railway timetables to my sons Arthur and Casper and they are to allow my old railway enthusiast friends to have any timetables which they wish. In case of doubt as to who is an old railway enthusiast friend, my wife Elizabeth can be asked. She knows who they are. Advise the trustees of Peter's will on the validity of these gifts