On the station there is the least fragment of No. 1 remaining. 
The marls are beautifully exposed, and are here clearer of im¬ 
purities than I have seen them. White and gray with purplish 
strips above and a good deal of bedded sand and saxidstone below. 
Some of the iron impregnated beds occur here also and the lower 
slopes are covered with the hard lumps. On the summit is a 
remnant of a wall, this has been built across the only accessible 
part of the summit. These may be a little of No. 1 remaining 
on the top of the buttes lying westward, but beyond these the 
red rocks seem to form met of the surface -A little black butte 
A dyke perhaps stands some 15 miles to the South West. While 
beyond this and still more to the westward are the remarkable 
fonns of monumental valley. To the North are the Blue Mts., 
but beyond our western line. The mass of them seems to be 
trachyte. The beds have been bent up, however, and an;arch 
of white rock may be seen in the South face. This arch \Ls 
doubtless the section of an anticlinal. Traces of the same 
may be seen in a line bf-hog backs that extend southward to 
the San Juan. As the fold approaches the San Juan, it seems 
to become monoclinal with the depression on the east. The 
!, Hog Back’ 1 is in the light red, which here looks white. 
August 8 - 
Marched from Camp at ford to 15 miles above. Passed the 
mouth of McElmo at 4-| miles. On the terrace between the 
