Lake Hévíz among Rotatorias as well ("Epiphanes brachionus" var. "Spinosus", "Lecane inermis"), which are only present in warm waters. Jenő Ponyi has described the lake's primitive crustaceans in detail. Also a unique "Hydracarina acarus" is said to have found its habitat outside the fence surrounding the lake. The waters are reported to be beneficial to patients suffering from rheumatic diseases and locomotor disorders, among others. There is a thriving health tourism industry in the area. Lake Hévíz Lake Hévíz is located in Hévíz, Hungary, near the western end of Lake Balaton, from Keszthely. It is the largest thermal lake in the world,
Lake Central Airlines closed the Indianapolis base and sold the Nord 262 aircraft, which had proven not to be reliable. Lake Central was also planning on acquiring new Boeing 737-200 jetliners; however, the acquisition of the airline by Allegheny resulted in the order being cancelled and Lake Central did not take delivery of or operate 737 jets. Shortly before it was acquired by and merged into Allegheny Airlines, Lake Central was serving the following destinations in ten U.S. states with Convair 580 and Nord 262 turboprop aircraft according to its April 28, 1968 system timetable: Lake Central Airlines Lake Central Airlines was an