Two Expeditions, One Date
The August 11 record divides almost perfectly along a line of sight. Clark and the canoe party log a numerical milestone — a large island reckoned to lie three thousand river-miles from the mouth of the Missouri — while Lewis, walking ahead with Drouillard, Shields, and McNeal, attempts the expedition’s long-sought first contact with a Shoshone. Neither party knows what the other is doing, and the journals reflect that separation in tone, length, and subject matter.
Clark’s entry is brisk and cartographic. He notes the morning shower, the southwest wind, the bayous threading a five-mile bottom, and the elevated plains beyond. His hunters’ tally is laconic and varied:
our hunters killed three Deer, one antilope, and Tomahawked Several Orter to day killed one Beaver with a Setting pole.
The detail of an otter taken by tomahawk and a beaver by setting-pole is the kind of incidental color Clark drops without elaboration; none of the enlisted journalists preserve it.
The Naming of 3000 Mile Island
Gass, Ordway, and Whitehouse all converge on the island as the day’s organizing fact. Gass keeps it tightest:
we came to a large island, which is 3000 miles from the river Du Bois at the mouth of the Missouri. We therefore called it 3000 mile Island.
Ordway and Whitehouse give nearly identical accounts — the Whitehouse-from-Ordway copying pattern is again visible, with Whitehouse following Ordway’s phrasing about hauling canoes over shoal places, the troublesome large flies, the beaver channels cut to lodges, and the snow-spotted mountains ahead. Whitehouse’s small departures are characteristic: he adds the cool cloudy morning at the opening and the mosquitoes at the close, framing Ordway’s middle with his own weather-and-pest brackets.
Ordway preserves one detail Whitehouse drops — geese and ducks on a little pond and prairie — and renders the valley as having “no other but cotton & willow [and] a fiew Small birch,” where Whitehouse flattens this to “a fiew Scattering cotton trees.” Both estimate the valley at eight to ten miles wide. Gass, characteristically, gives none of this landscape; he reports distance, weather, and game, and stops.
Lewis Alone on the Plain
Lewis’s entry is in another register entirely. While the boat party measures river-miles, he is staging a diplomatic encounter according to a protocol he has clearly thought through in advance. He describes the Shoshone rider with an ethnographer’s precision — bow and quiver, no saddle, a string attached to the underjaw serving as bridle — and then narrates his own performance of the robe signal:
holding the mantle or robe in your hands at two corners and then throwing up in the air higher than the head bringing it to the earth as if in the act of spreading it, thus repeating three times.
He even pauses to gloss the signal’s origin in the custom of spreading a robe for guests to sit on.
The encounter unravels because Lewis cannot control his flanking men. Drouillard and Shields, sent out to search for the Indian road with the agreed-upon signal of a hat in a gun muzzle, come into view on either side and feed the rider’s suspicion. Lewis’s frustration is audible: he would willingly have halted them but “they were too far distant to hear me,” and he fears that any signal would deepen the alarm. He lays down his gun, advances with beads and a looking-glass, and calls out “tab-ba-bone” — his rendering of the Shoshone word he believes means white man. The OCR cuts off mid-sentence with the rider still watching the flankers over his shoulder.
What the Comparison Reveals
None of the four other narrators registers Lewis’s absence as significant, because none of them knows what is happening ahead. Clark’s entry does not mention that Lewis is gone; the enlisted men do not speculate. The asymmetry of the August 11 record — four short entries about an island and one long entry about a failed first contact — is itself the historical fact. The expedition’s most consequential diplomatic moment to date is being attempted by four men on foot while the main party names a milestone and counts otters. Only when the journals are read together does the day’s true shape emerge: a routine river-day for most, and for Lewis, the Shoshone rider turning his horse and moving slowly away.
