Environmentalists and biologists study lake conditions via installations such as the Franz Theodore Stone Laboratory on Gibraltar Island. The lab, which was established in 1895, is the oldest biological field station in the United States. Stone Laboratory was donated to the Ohio State University by Julius Stone in 1925 as part of the university's Ohio Sea Grant College Program. The Great Lakes Institute of the University of Windsor has experts who study issues such as lake sediment pollution and the flow of contaminants such as phosphorus.