Thurgau
a canton N. E. of Switzerland; bo inded mainly by the Lake of Constance and the cantons of Zürich and St. Gall; a ea, 381 square miles; capital, Frauenfeld It differs much in physical conformation from most other Swiss cantons, in having no high mountains, though the surface is sufficiently diversified. The whole canton belongs to the basin of the Rhine, to which its waters are conveyed chiefly by the Thur and its affluents, and partly also by the Lake of Constance, including the Untersee. The principal crops are grain and potatoes; large quantities of fruit are also grown. In many places the vine is successfully cultivated.
The manufactures consist chiefly of cottons, hosiery, ribbons, lace, etc. Pop. about 135,000.