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TJ. S. GEOLOGICAL SURVEY EXPEDITION 
TO TEE YELLOWSTONE ?MK, 1878. 
Diary for 1878, Copy of Notebooks 
July 21* In camp, Davis Ranch near Cheyenne. 
July 22. 
July 23. 
July 24. 
July 25. 
July 26. 
July 27. 
July 28. 
July 29. 
ft H rr if t* ft 
with pack train 
March/from Davis Ranch to Cheyenne. 
Leave Cheyenne at 2 o’clock. 
arrive at i^oint of Rocks. 
From Point of Rocks to Leucite Butte. 
From Leucite Butte to North Pilot Butte. 
Sunday. From North Pilot Butte to the 
second bend of the Sandy Creek. 
Eclip se today. March down Sandy Creek 5 
miles. Camp made at noon. Observe eclipse and 
make various records, also sketches of the eclipse 
corona 
July 30. Make a long march 25 miles to the base of 
Wind River Mountains near head of Sweetwater 
River. Cross stage road at station and sent/ letters 
o ■ 1 [ j 
ho lie . 
The geology from Point of Rocks to this 
point is very simple. Vie pass up through the 
upper Laramie beds and in North Pilot Butte and 
reach the Green River. From this Butte to the 
Granite and west base of Wind River Mountains 
there is nothing but Green River and Pahs at ch 
