The journal entries for January 15, 1805 at Fort Mandan present a striking divergence in attention. While William Clark devotes his page to the careful observation of a total lunar eclipse, the enlisted journalists—John Ordway and Joseph Whitehouse—record only the unseasonable warmth and routine camp business. Patrick Gass’s surviving passage, meanwhile, describes New Year’s festivities that appear misplaced under this date, raising questions about the editorial reconstruction of his published journal.
Clark the Astronomer
Clark alone among the four narrators registers what was, scientifically, the most significant event of the date: a total lunar eclipse observed in the small hours of the morning. His entry reads with the precision of a working observer:
between 12 & 3 oClock this morning we had a total eclips of the moon, a part of the observations necessary for our purpose in this eclips we got which is at 12h 57m 54s Total Darkness of the moon @ 1 44 00 End of total Darkness of This moon @ 2 39 10 End of the eclips-
The eclipse mattered because its precisely-timed phases offered a method of determining longitude—one of the central scientific obligations Jefferson had laid upon the captains. Clark logs the times to the second. That none of the enlisted journalists mention the eclipse is itself revealing: the astronomical work was the captains’ responsibility, conducted while the rest of the post slept, and it left no impression on the rank-and-file record.
The Weather as Common Ground
What Ordway, Whitehouse, and Clark do share is the day’s mildness. Clark notes the morning was “not So Cold as yesterday” with a wind that “choped around to the N W. Still temperate.” Ordway records that “the weather is thoughy so that the Snow melts off the huts.” Whitehouse echoes the same impression: “the day kept warm & pleasant.”
Whitehouse adds a small logistical detail the others omit—that “the man who went to the fort yesterday. Came down with 2 horses after me & Some meat.” Ordway corroborates the horse movement obliquely, mentioning “the horses down to the hunters, about 2 oClock.” The two enlisted journals thus dovetail on the supply traffic between the fort and the hunting parties working the bottoms, a routine of mid-winter subsistence that Clark, focused on diplomacy and observation, does not record.
Diplomacy with the Minitari
The day’s other event was a visit from Hidatsa (Minitari, or “Grovantars” in Ordway’s spelling) leadership. Ordway notes briefly that “Several of the Grovantars chiefs came to See us.” Clark provides the substance and the stakes:
four Considerate men of the Minetarre Came to See us we Smoked in the pipe, maney mands. present also, we Showed to those men who had been impressed with an unfavourable oppinion of us.
Clark’s phrasing—”impressed with an unfavourable oppinion”—signals an active campaign of counter-persuasion, likely against rumors circulated by British-affiliated traders from the North West Company. The presence of “maney mands” (many Mandans) at the council suggests the captains were leveraging their established Mandan relationships to vouch for the Corps before the more skeptical Hidatsa. Ordway registers the visit but not its diplomatic charge; Whitehouse misses it entirely.
The Gass Anomaly
Patrick Gass’s entry under this date does not belong to January 15 at all. He describes a swivel gun fired “to welcome the New Year,” Lewis distributing “a glass of good old whiskey,” and a delegation going up to the Mandan village “to begin the dance.” These are the events of January 1, 1805, recorded elsewhere by Ordway and Clark. Because Gass’s original manuscript does not survive and his journal reaches us through David McKeehan’s 1807 published edition, such date displacements likely reflect editorial compression rather than Gass’s own confusion. The passage remains valuable for its texture—two rounds of whiskey, a warm afternoon, men remaining overnight in the village—but it cannot be read as a January 15 witness.
The result is a date on which only three narrators truly speak, and on which the captain’s scientific gaze and the enlisted men’s attention to weather and horses divide cleanly along the lines of duty.
