JAUER, an ancient town of Prussian Silesia, in the government of Liegnitz. The town is situate on the Neisse, at the foot of the Riesengebirge, 38 miles W. of Breslau, and 10 miles S.E. of Liegnitz. It is surrounded by an old wall and contains a castle built by Henry III. in 1244, and now converted into a house of correction and asylum. The manufactures consist of gloves, woollen and linen goods, and tobacco. Its sausages and shoes are exported to great distances. From the rapid current of the Neisse, the town is subjected to frequent inundations. Pop. about 6000.