The expedition’s progress on April 15, 1805, roughly twenty-two to twenty-three miles upriver from the previous night’s camp, generated four journal entries that together illustrate the stratified record-keeping practices of the Corps of Discovery. Each narrator covers the same ground, but the texture of attention varies enormously, and the relationships among the entries reveal much about how information moved within the party.
Mileage, Game, and the Sergeants’ Shorthand
Patrick Gass and John Ordway, both sergeants charged with maintaining a running record, produce the briefest accounts. Gass compresses the entire day into four sentences, noting only that the party set out early, passed Goat-pen Creek on the north side, observed buffalo and two bears, and made twenty-three miles before camping on the south bank. Ordway’s entry covers the same skeletal facts but adds texture: a southeast breeze that allowed sailing, "flocks of Goats on S. S. and Gangs of buffaloe on Sand beachs," a goose killed by one of the men, and the depth of the river.
Ordway alone preserves a near-incident that the captains omit entirely:
Saw a large black bair and 2 white ones on the N. S. Capt Clark was near Shooting one of the whites ones.
Clark himself mentions only "a black bear Seen from the Perogues to day," saying nothing of the grizzlies or his own near-shot. Lewis does not mention bears at all. This is a useful reminder that the captains’ journals, despite their length, are selective; the sergeants sometimes capture moments the officers preferred to leave out or simply did not witness from their respective positions on shore and afloat.
Lewis’s Naturalist Frame and Clark’s Embedded Report
Meriwether Lewis’s entry is by far the longest and follows his characteristic naturalist’s structure. Walking the starboard bottoms for about six miles, he tastes a rivulet and notes it is "in a small degree brackish" but with "less of the glauber salt, or alumn" than usual. He records the season’s first frog calls, identifying the note as identical to "the small frogs which are common to the lagoons and swamps of the U States." He transcribes the courtship call of the prairie grouse phonetically — "kuck, kuck, kuck, coo, coo, coo" — and observes that the male "dubbs something like the pheasant, but by no means as loud."
Lewis then does something structurally distinctive: he embeds Clark’s verbal report of his own ramble as a direct quotation, explicitly framed ("Capt. Clark walked on the Std. shore, and on his return in the evening gave me the following account"). The quoted passage describes the high country nine miles from the river, the drainages running northeast toward what the captains correctly suspected was Mouse River, and the Assiniboine antelope pen.
Two Versions of the Antelope Pound
Comparing Lewis’s quoted Clark with Clark’s own journal entry for the same day reveals how the captains coordinated their writing. Clark records the same observations in his own hand:
I saw the remains of Several Camps of ossinniboins, near one of those camps & at no great distance from the mouth of the aforesid Creek, in a hollow, I saw a large Strong pen made for the purpose of Catching the antelope, with wings projecting from it widining from the pen
Lewis’s version, drawn from Clark’s verbal account, is more elaborate and more technical:
a strong pound was first made of timbers, on one side of which there was a small apparture, sufficiently large to admit an Antelope; from each side of this apparture, a curtain was extended to a considerable distance, widening as they receded from the pound.
Lewis has expanded Clark’s brief description into an ethnographic miniature, specifying the aperture, the curtains, and the funneling geometry. Whether Clark explained more orally than he wrote, or Lewis interpolated from his own knowledge of similar structures, the contrast shows Lewis self-consciously elevating the register for what he treated as a more formal scientific record.
The brackish water complaint is also shared but differently weighted. Clark issues a sweeping verdict — he "can Safely Say that I have not Seen one drop of water fit for use above fort Mandan except Knife and the little Missouris Rivers and the Missouri" — while Lewis frames it as a chemical observation about glauber salts and alum. Same fact, two registers: Clark the practical traveler, Lewis the would-be chemist. Together the four entries form a layered record in which the sergeants supply the day’s frame, Clark supplies the field reconnaissance, and Lewis polishes both into the expedition’s most quotable prose.
