VETTER [Vätter or Wetter, often written, with the addition of the definite article, Vettern], a lake of southern Sweden, 80 m. long, and 18 m. in extreme breadth. It has an area of 733 sq. m., and a drainage area of 2528 sq. m.; its maximum depth in 390 ft., and its elevation above sea-level 289 ft. It drains eastward by the Motala river to the Baltic. Its waters are of remarkable transparency and blueness, its shores picturesque and steep on the east side, where the Omburg (863 ft.) rises abruptly, with furrowed flanks pierced by caves. The lake is subject to sudden storms. Its northern part is crossed from Karlsborg to Motala (W. to E.) by the Göta canal route. At the southern end is the important manufacturing town of Jönköping, and 15 m. N. of it the picturesque island of Vising, with a ruined palace of the 17th century and a fine church. Vadstena, 8 m. S. of Motala, with a staple industry in lace, has a convent (now a hospital) of St Bridget or Birgitta (1383), a beautiful monastic church (1395–1424) and a castle of King Gustavus Vasa. At Alvastra, 16 m. S. again, are ruins of a Cistercian monastery of the 11th century. Close to Motala are some of the largest mechanical workshops in Sweden, building warships, machinery, bridges, &c.