"But first we must send word of our safe arrival to the President," said Lewis, feeling unconsciously for certain papers that had slept next his heart for many a day.

"Te post haf departed from San Loui'," remarked a bystander.

"Departed? It must be delayed. Here, Drouillard, hurry with this note to Mr. Hay at Cahokia and bid him hold the mail until to-morrow noon."

Drouillard, with his old friend Pascal Cerré, the son of Gabriel, set off at once across the Mississippi. The wharf was lined with flatboats loaded with salt for 'Kasky and furs for New Orleans.

Once a month a one-horse mail arrived at Cahokia. Formerly St. Louis went over there for mail,—St. Louis was only a village near Cahokia then; but already Les Américains were turning things upside down.

"We haf a post office now. San Loui' haf grown."

Every one said that. To eyes that had seen nothing more stately than Fort Mandan or Clatsop, St. Louis had taken on metropolitan airs. In the old fort where lately lounged the Spanish governor, peering anxiously across the dividing waters, and whence had lately marched the Spanish garrison, American courts of justice were in session. Out of the old Spanish martello tower on the hill, a few Indian prisoners looked down on the animated street below.

With the post office and the court house had come the American school, and already vivacious French children were claiming as their own, Patrick Henry, Thomas Jefferson, and George Washington.

Just opposite the Chouteau mansion was the old Spanish Government House, the house where George Rogers Clark had met and loved the dazzling Donna.

Aaron Burr had lately been there, feted by the people, plotting treason with Wilkinson in the Government House itself; and now his disorganised followers, young men of birth and education from Atlantic cities, stranded in St. Louis, were to become the pioneer schoolmasters of Upper Louisiana.