The Mill Stream runs through the middle of the campus. Starting across 12th Street and flowing through the length of the campus, it passes by the Martha Springer Botanical Garden, the Hatfield Library, Hudson Hall, the University Center, Smith Auditorium and Goudy Commons. This artificial stream, commonly referred to as the Mill Stream, was once known as the Mill Race. It forms a "W" shape when viewed from the University Center. Biology and environmental science classes utilize the Mill Stream as an authentic research venue. As part of the freshman matriculation ceremony, new students place a lit candle into the Mill Stream and watch it float downstream.