January 18, 1804
An Inch of Snow


On a day of slightly higher temperatures, the first heavy snowfall.

Wednesday 18th Jany. a Cloudy morning with moderate breaze from the N W. b[y] W The river run with Ice, a 8 oClock the Thromtr. Stoodat 1° below 0,— 9 oClock 1° abov 0, at 11 oClock rose to 4° above 0, and beg[an] to Snow, at 12 oClock The Thermt. at 2 above 0,. Snow above 1 Inch at 1 oClock 2 abov 0, at 2 oClock 1 abov 0, and left off Snowing—


Sources: Osgood 19, 203; Moulton 2:157.


January 19, 1804
Higher Temperatures. The Hunters Have Good Luck


On a considerably warmer day, the hunters brought back a grand haul of game.

Thursday 19 Jany Som Snow fell last night, a cloudy morning, the river continues to fall, & Some Ice running, at 8 oClock this morning the Thermormeter Stood at 13° above 0, the wind moderate from the N W, at 9 oClock 15° abov 0, at 10 oClock 16° above 0, at 11 oClock 16° above 0, at 12 oClock 19° above 0, at 1 oClock 17° abo[ve] 0, at 2 oClock 15 1/2°—abov 0, at 3 oClock 13° abov 0, at 4 oClock 11° abov 0, at [5?] oClock 10 1/2 abov 0,— Gibson Killed 3 Deer and Colter 3 Turkey, Shields 4 Turkey, Worne[r] & Thompson 14 rabits—

Sources: Osgood 19, 203; Moulton 2:158.


January 20, 1804
More Measurements, and More Good Hunting


On a day spent recording temperatures and astronomical readings (none of these reproduced below), the hunters again brought in some good eating.

Friday 20th 1804 Jany— a verry Cold night, river Still falling no Ice running out of the Missouries, the wind this morning from NW— . . . . a Cloudy [day], many Grous Caught to Day and Hall Caught 14 Rabits—

Sources: Osgood 19, 203; Moulton 2:158.


January 21, 1804
Journey Calculations, Boat Design, and Rules for a Court Martial


Before recording the day’s events (two and a half inches of snow, and fine hail falling) Clark wrote two pages containing two calculations, the length of time needed to travel to the Pacific and back, the amount of space required on the expedition’s boats for men and equipment, and detailed rules for a court martial. The page also contains a philosophical definition of the word “Sense,” perhaps copied by Clark as a composition and spelling exercise.

Journey Calculations


Clark assessed the distance to the Pacific at 3,050 miles, with an underestimate of the distance to the Rocky Mountains. The actual distance was close to 4,000 miles. Clark calculated a total journey time of around nineteen months, assuming quicker travel down the Missouri on the return. This was close to the actual time taken, though Clark made no allowance for the winter stops at the Mandan villages and at Fort Clatsop, which between them added ten months to the total journey time. The calculations present a shrewd estimate, made by an experienced soldier.

Boat Design

The second set of numbers record the most efficient distribution of men and equipment between the large keelboat and the pirogues, again showing careful forward planning. Clark was at the same time estimating the number of men needed to man the boats and the number of lockers that would need to be constructed on the keelboat to house their equipment.

Rules for a Court Martial


The third set of notes from this day consist of a set of draft regulations for a court martial, drawn up with reference to the Articles of War carried on all military expeditions. The full text of Clark’s draft is given here.

Supposeing the party to Consist of 2 Intptrs 4 Non Comd. officers and 21 men and the rules to be observed is Strictly such as Cap. L & C shall from time [to time] establish, and a violiation or Disobediance shall be Subject to Such punishment as derected by the articles of War, in like Cases and Such other punishments, as Shall be inflicted by the Sentence of a Court Martial which are to be formed in the following manner, Viz; one Intptr or Sergt. to act as president and at least 1 n Comd. officers & 5 privates members The Court to Consist of not less then 7 members, at other times when Convenient one of the Capts. will preside at the Court in that Case the Court will have an addition to their number of a presdt. (but in all Cases Capt L. & C doe reserve to themselves the right [of] rudcing [reducing in rank] N[on] C[ommissioned] officers at will [and] of inflicting such punishment as they may thin[k] right agreeable to Law at any time which from the nature of the offence & the good of the Service require it) This Court will act agreeable to the rules and regulations of the articles of War and Such others as may be established by the Said Cpt L. & C. from time to time.

Sources: Osgood, 19-21, 203-4; Moulton 2:159-63.


January 22, 1804
Deep Snow

At camp, Clark recorded a heavy snowfall. In Washington, Jefferson wrote to Lewis, with further advice and encouragement.

Clark's Journal


Sunday 22nd Jany: 1804 Snow all the lst night, and Snows this morning, the depth is 5 3/4 Inches, The Thermometer Stands at 9 oClock this morning in the Open Air at 11° abov 0,—, at 12 oClock rose to 14° abov 0, aand Stoped Snowing wind Easterly at 3 oClock 13d[egrees] abv 0, riv nearly Clear of Ice,

Jefferson's Letter


Washington Jan. 22. 1804

Dear Sir

My letters since your departure have been of July 11. & 15. Nov. 16. and Jan. 13. Yours received are of July 8. 15. 22. 25. Sep. 25. 30. & Oct. 3. Since the date of the last we have no certain information of your movements. With mine of Nov. 16. I sent you some extracts made by myself from the journal of an agent of the trading company of St. Louis up the Missouri. I now inclose a translation of that journal in full for your information. In that of the 13th inst. I inclosed you the map of a Mr. Evans, a Welshman, employed by the Spanish government for that purpose, but whose original object I believe had been to go in search of the Welsh Indians, said to be up the Missouri. On this subject a Mr. Rees of the same nation, established in the Western parts of Pennsylvania, will write to you. N. Orleans was delivered to us on the 20th of Dec. and our garrisons & government established there. The order for the delivery of the Upper posts were to leave N. Orleans on the 28th and we presume all those posts will be occupied by our troops by the last day of the present month. When your instructions were penned, this new position was not so authentically known as to effect the complection of your instructions. Being now become sovereigns of the country, without however any diminution of the Indian rights of occupancy we are authorized to propose to them in direct terms the institution of commerce with them. It will now be proper you should inform those through whose country you will pass, or whom you may meet, that their late fathers the Spaniards have agreed to withdraw all their troops from all the waters & country of the Missisipi & Missouri, that they have surrendered to us all their subjects Spanish & French settled there, and all their posts & lands: that henceforward we become their fathers and friends, and that we shall endeavor that they shall have no cause to lament the change: that we have sent you to enquire into the nature of the country & the nations inhabiting it, to know at what places and times we must establish stores of goods and persons to carry them and make the proper establishments: that in the mean time, the same traders who reside among or visit them, and who now are a part of us, will continue to supply them as usual: that we shall endeavor to become acquainted with them as soon as possible, and that they will find in us faithful friends and protectors. Although you will pass through no settlements of the Sioux (except seceders) yet you will probably meet with parties of them. On that nation we wish most particularly to make a friendly impression, because of their immense power, and because we learn they are very desirous of being on the most friendly terms with us.

I inclose you a letter which I believe is from some one on the part of the Philosophical society. They have made you a member, and your diploma is lodged with me; but I suppose it safest to keep it here & not to send it after you. Mr. Harvie [Lewis’s successor as Jefferson’s private secretary] departs tomorrow for France as the bearer of the Louisiana stock to Paris. Capt. William Brent takes his place with me. Congress will probably continue in session through the month of March. Your friends here & in Albemarle, as far as I recollect are well. Trist will be the Collector of N. Orleans, & his family will go to him in the spring. Dr. Bache is now in Philadelphia & probably will not return to N. Orleans. Accept my friendly salutations & assurances of affectionate esteem & respect.

TH: JEFFERSON


Sources: Osgood, 24, 205; Moulton 2:164; Jackson, Letters, item 105.

January 23, 1804
An Uneventful Day


Clark’s field notes record the gradual settling into a winter routine.

[S]munday 23rd Jany 1804 a Cloudy morning but little Ice runig to day The Thermtr. at 8 oClock at 11° abo 0, at 12 oClock Stood at 10° abov o, (I pen an Ordr to Corpl.) at 3 oClock 17° abo 0, in the evening the wind raised and Shifted to the North Cought 14 rabits & Killed 2 Deer—

Sources: Osgood, 24, 205; Moulton 2:164.

January 24, 1804
Clark Takes Physic for His Ailments


On a beautiful day, Clark recorded taking a draught of medicine for his continued sickness.

Tuesday 24th a Butifull morning Clear Sunshine the wi[n]ds ligh[t] from the N W, the Thermometer at 9 oClock Stood at 4° abo 0, (I take fesick), at 10 oClock 8° abov 0, wind West, at 12 oClock—14° abo 0, at 3 oClock 11° abov 0, Smone [some] Small pieces of Ice running Sick to day

Sources: Osgood, 24, 205; Moulton 2:165.