Sabine.

Chambers's Encyclopaedia, Volume 9: Bound to Swansea, p. 61

Sabine. A river of Texas, rises near the northern boundary of Texas, and flows south-east to the border of Louisiana, and then south, forming the boundary between the two states. It empties through Sabine Lake (18 miles long by 9 miles wide) into the Gulf of Mexico. The Sabine is 500 miles long, and though shallow is mostly navigable for small steamboats.

Source scan(s): p. 0072