The Shoshones were so desperately poor that they had almost no economy to speak of. In the spring and summer, they lived on salmon; in the fall and winter, on buffalo. That they could successfully hunt buffalo was thanks to their horses, the sole source of wealth among them. Having few to no rifles, without horses they would have been indifferent hunters at best. On August 23, Lewis watched a dozen young warriors pursuing mule deer from horseback. The chase covered four miles and “was really entertaining.” Shortly after noon, the hunters came in with two deer and three pronghorns. To Lewis’s
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