But Doby could not answer. Neither could his mother. Both were on the verge of panic. For it is a nerve-racking thing to stand still and wait for the next movement of a doubtful visitor, who may be going to send a burning arrow into the barn loft or to call a band of warriors to attack the house.

To give his wife and son a chance to collect their wits, the father queried: "Who were the first white folks to come to this part of the country? Perhaps we can guess who this man is."

"The French came earliest," answered the mother.

"When?"

"About a hundred years ago," she said.

"What did they do?"

"They built a fort and trading post at Miamis where Fort Wayne now is. Then they set up another at Ouiatanon and still another one here." As she stared at the motley figure coming nearer, the mother smiled, for she began to understand that she was now to meet quite a different sort of habitant from any of the varied peoples she had seen in the long journey to this old French settlement of Vincennes.

"Ha!" cried Doby, trying to keep one eye on the loophole and the other on his father's face. "When the Spanish discovered America, they claimed the whole continent. If they had known about this place, they would have set up a flag here. But the French explorers really did find it and their flag is the one that covered it." Here he caught a hint from his father's questions and his mother's recovered calm. "'Twas a race of traders who followed the explorers." He now became eager to examine the stranger. "A half-breed trader! That's what he is!"

"He is so queer-looking," was the mother's objection to him.

Doby was quick with his surmises. "If these French traders made friends with the Indians and sometimes lived with them in their wigwams, and copied all the clever things the Indians knew about living in the open, they would become half Indians themselves. This odd old man is a voyageur. I know he is!"