Clark: December 13, 1804
On a clear, bitterly cold Thursday, Clark recorded a morning temperature of 20 degrees below zero, with frost from the previous night coating the ice, old snow, and bare ground to about a sixth of an inch thick. Despite the fine weather, the extreme cold made it impossible to take an observation using an artificial horizon. Joseph Fields killed a cow and calf about a mile from the fort. Clark also noted that the river was falling.
13th December Thursday 1804 The last night was verry Clear & the frost
which fell Covered the ice old Snow & thos parts which was naked 1/6
of an inch, The Thermotr. Stands this morning at 20° below 0, a fine day.
find it imposible to make an Observation with an artifical Horsison Joseph
Fields kill a Cow and Calf to day one mile from the fort river falls
Read this entry in modern English AI-translated
13th December, Thursday, 1804. Last night was very clear, and the frost that fell covered the ice, old snow, and those parts which were bare with 1/6 of an inch. The thermometer stands this morning at 20° below 0. A fine day.
I find it impossible to make an observation with an artificial horizon. Joseph Fields killed a cow and calf today, one mile from the fort. The river falls.
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