The Spaniards, for a long time, considered Louisiana as a property justly theirs, because it constitutes the greatest Part of Florida, which they first discovered. The pains the French were at then to settle there, roused their jealousy, to form the design of cramping us, by settling at the Assinaïs, a nation not very distant from the Nactchitoches, whither some Frenchmen had penetrated. There the Spaniards met with no small difficulty to form that settlement, and being at a loss how to accomplish it, one F. Ydalgo, a Franciscan Friar, took it in his head to write to the French, to beg their assistance in {6} settling a mission among the Assinaïs. He sent three different copies of his letter hap-hazard three different ways to our settlements, hoping one of them at least might fall into the hands of the French. Nor was he disappointed in his hope, one of them, from one post to another, and from hand to hand, falling into the hands of M. de la Motte. That General, incessantly taken up with the concerns of the colony, and the means of relieving it, was not apprized of the designs of the Spaniards in that letter; could only see therein a sure and short method to remedy the present evils, by favouring the Spaniards, and making a treaty of commerce with them, which might procure to the colony what it was in want of, and what the Spaniards abounded with, namely, horses, cattle, and money: He therefore communicated that letter to M. de St. Denis, to whom he proposed to undertake a journey by land to Mexico. M. de St. Denis, for the fourteen years he was in Louisiana, had made several excursions up and down the country; and having a general knowledge of all the languages of the different nations which inhabit it, gained the love and esteem of these people, so far as to be acknowledged their Grand Chief. This gentleman, in other respects a man of courage, prudence, and resolution, was then the fittest person M. de la Motte could have pitched upon, to put his design in execution. How fatiguing soever the enterprize was, M. de St. Denis undertook it with pleasure, and set out with twenty-five men. This small company would have made some figure, had it continued entire; but some of them dropped M. de St. Denis by the way, and many of them remained among the Nactchitoches, to whose country he was come. He was therefore obliged to set out from that place, accompanied only by ten men, with whom he traversed upwards of an hundred and fifty leagues in a country entirely depopulated, having on his route met with no nation, till he came to the Presidio, or fortress of St. John Baptist, on the Rio (river) del Norte, in New Mexico.