Aside from the duties of the Spanish missions to spread the Catholic faith, they were also, in reality, observation and trading posts of the Spaniards. From one of these missions it was learned from an Indian who came to trade, that other white men had come out of the sea in large houses that floated on the waters of the gulf and had settled on the coast land. On March 20, 1689, LaSalle was assassinated by some of his own men on a tributary of the Trinity River. Father Joutel reported the men responsible for the assassination were in turn killed by the Indians. The remnants of the party returned to Fort St. Louis and finding it deserted, retraced their journey into the Trinity River area. Alonzo DeLeon and Captain Flores were leading a scouting patrol when they found Santiago Grislet, Jean Lavaschevque and two very young boys, the Tulon brothers, Roberto and Pedro. This Spanish patrol searched for the next two months for other Frenchmen, but not being successful, returned to Mexico. 1689. Juan Jarri had, during the absence of LaSalle, deserted Fort St. Louis and had risen to a lordly position among the tribes of the Coahuile Indians. During the search by DeLeon and Flores he had been shifted from tribe to tribe so that the Spanish Patrol failed to capture him. The Spanish now realized that this one Frenchman had the power to upset the semi-peacefulness of the Spanish frontier. The College of the Holy Cross was desiring to extend its Missionary work north of the Rio Grande. Don Alonzo DeLeon, now the Spanish Governor of the Coahuile Territory, led an expedition to establish three missions among Hasinai Indians south of the Trinity River. He now also found himself in pursuit of a party of Frenchmen (Father Joutel’s party). Henri De Tonty at the Fort St. Louis near Starving Rock in the Illinois country, realized something was amiss and came in search of LaSalle. It is interesting to note how De Tonty, in all this vast country of the southern United States area chose the exact direction in which to travel. Probably the Caddo federation of Indians had trade agreements with the Indian tribes as far north as the Illinois and even further north among the Ouisconsins, to the west they traded with the Hasinais who in turn traded with the Coahuile Indians. The Amole root (a species of the Yucca plant) was supplied to the Hasinais by the Coahuile Indians. The Caddos traded for this root, which had cleansing properties such as soap and when boiled in water this liquid was used for bathing purposes, it left a pleasant odor on the body of the user. [Illustration: Hinta-Sak: A home of the Adais Indians. This drawing of a Caddo hinta-sak, or house, was made from the description of an eye-witness, Gonzado Quadrado Charmillo, one of the chroniclers of the De Soto expedition which visited the El Camino Real area in 1540.