GEISLINGEN, a town in the Land of Wurttemberg, on the Thierbach, 38 m. by rail E.S.E. of Stuttgart. Pop. It has shops for the carving and turning of ivory and wood, besides iron-works, machinery factories, glass-works and brewing. The church of St. Mary contains fine wood-carving. Above the town lie the ruins of the castle of Helfenstein, which was destroyed in 1552. The town, which passed to Wurttemberg in 181 o, has chalybeate springs.