together. A heavy mass of this ten feet thick outcrops 
on the south side of the ridge. (see fragments of specimens) 
A hundred yards farther on is another outcrop of somewhat 
similar looking rock hut not brecciated. Prom a little 
distance it looks like a coal outcrop and closer like a 
loose compacted massive sandstone formed of coarse black sand 
It looks to lie nearly horizontal. The other has an apparent 
dip of 30 or 50 detrees to the east. (see fragments) On 
this ridge are also, apparently, the ordinary trachytes, 
mostly however like the specimens from the hud Puffs. These 
are loose masses not apparently rounded of other varieties 
(see one fragment). Just beneath the latter formation (the 
dark sandstone) there is another outcrop of the dark breccia. 
The relations were not apparent. 
Passed down to the trail and across the swamp to the 
low ridges which inclose the milky pool below. These ridges 
are probably composed of the same conglomerate as the buttes 
on the east fork side as they are in line with the strike. 
The lake is enclosed excepting a narrow gateway at the east. 
The hills are not more than 150 feet. high. There are a 
number of mud springs behind the lower butte. 7 e turned to 
camp. Gannett and Test had gone to the twin buttes. John 
Raymond had been sent to Gardiners 'iver Hot Spring , 
Walked back to the Fountain Geyser and had the good 
fortune to. witness an eruption. The two pools were full to 
the rim mid overflowing. The lower one was quiet during the 
