Note 42 — SPANISH POLICY IN MISSISSIPPI AFTER THE TREATY OF SAN LORENZO.

March 2, the Spanish Minister wrote Mr. Pickering that he had become confirmed in a suspicion expressed to him three days previous, that the British in Canada were preparing to cross over from the lakes to the Mississippi, "by Fox River, Onisconsin or by the Illinois or other parts of the territory of the United States" in order to attack Upper Louisiana. He therefore requested that measures be promptly taken to prevent a violation of American neutrality (Amer. State Papers, For. Rel., II, 68).