The Colorado River 
310 
this occasion we again climbed Mt. Trumbull and some of the 
others of the group; and Dodds and I descended at the foot 
of the Toroweap to the river at the rapid called Lava Falls. 
It was a difficult climb. 
In triangulating I often had occasion to take the bearings 
of two large buttes lying to the north-west^ and in order that 
my recorder could put down the readings so that I might 
identify them later I was obliged to give him titles for these. 
They had no names in our language, and I did not know the 
native ones, so, remembering that at the foot of one I had 
found some ant-hills covered with beautiful diamond-like 
quartz crystals, I called it Diamond Butte, and the other, 
having a dark, weird, forbidding look, I named on the spur of 
the moment Solitaire Butte. These names being used by the 
other members of the corps, they became fixtures and are now 
on all the maps. I had no idea at that time of their becoming 
permanent. This was also the case with a large butte on the 
east side of Marble Canyon, which I had occasion to sight to 
from the Kaibab. It stood up so like a great altar, and, having 
in my mind the house-building Amerinds who had formerly 
occupied the country, and whom the Pai Utes called Shinumo, 
I called it Shinumo Altar, the name it now bears. Probably 
there are people who wonder where the altar is from which it 
was named. It was the appearance that suggested the title, 
not any archaeological find. Once when we were in the 
Uinkaret country, Powell came in from a climb to the summit 
of what he named Mt. Logan, and said he had just seen a fine 
mountain off to the south-west which he would name after me. 
Of course I was much pleased at having my name thus per¬ 
petuated. The mountain turned out to be the culminating 
point of the Shewits Plateau. None of us visited it at that 
time, but Thompson went there later, and I crossed its slopes 
twice several years afterward. On the summit is a circular 
ruin about twenty feet in diameter with walls remaining two 
feet high. 
It will be remembered that we had left one of our boats 
near the mouth of the Dirty Devil River, A party was to go 
overland to that point and bring this boat down to the Paria, 
