5:30 P.M. Third in a series of trips for when you don’t have much time and can’t go far from home, not to mention the price of gas. Each trip starts at a different location and the leader may choose to go to more than one park. May 19: Emily Oaks Nature Center (Skokie): Meet in the parking lot. Turn north on Knox(east of Skokie Blvd.) and make a left at the T intersection to the Emily Oaks parking lot. Leader: Eleonora diLiscia.