Whenever used or referred to in this Act, unless a different meaning clearly appears from the context, (1) “Cooperative Extension Service” means the “Cooperative Extension Service of the College of Agriculture, of the University of Illinois,” hereinafter referred to as “cooperative extension service”; (2) “director of extension” means the “Director of the University of Illinois Cooperative Extension Service,” hereinafter referred to as “director of extension”; (3) “Board of Trustees” shall mean “The Board of Trustees of the University of Illinois” hereinafter referred to as “Board of Trustees.”