In a letter addressed by Commander Lemoyne d'Iberville to the Minister of the French Navy, dated from Bayogoulas, February 26th, 1700, he states that an English fur-trader and Indian slave-jobber had just visited the Tonica, who are on a river emptying into the Mississippi, twenty leagues above the Taensa Indians, at some distance from the Chicasa, and 170 leagues from the Gulf of Mexico. When d'Iberville ascended the Yazoo river in the same year, he found a village of this tribe on its right (or western) bank, four days' travel from the Natchez landing. Seven villages were seen upon this river, which is navigable for sixty leagues. The Tonica village, the lowest of them, was two days' travel from Thysia, the uppermost (Margry IV, 180. 362. 398; V, 401). La Harpe mentions the establishment of a mission house among the Tonica on Yazoo river.[30]