64 EXPLORATION OF THE CANONS OF THE COLOKADO. 
little shelf, along which we climb, and, passing beyond the pool, walk a 
hundred yards or more, turn to the right, and find ourselves in another 
dome shaped amphitheater. There is a winding cleft at the top, reaching 
out to the country above, nearly two thousand feet overhead. The rounded, 
basin shaped bottom is filled with water to the foot of the walls. There is 
no shelf by which we can pass around the foot. If we swim across, we 
meet with a face of rock hundreds of feet high, over which a little rill glides, 
and it will be impossible to climb. So we can go no farther up this canon. 
Then we turn back, and examine the walls on either side carefully, to dis 
cover, if possible, some way of climbing out. In this search, every man 
takes his own course, and we are scattered. I almost abandon the idea of 
getting out, and am engaged in searching for fossils, when I discover, on 
the north, a broken place, up which it may be possible for me to climb. 
The way, for a distance, is up a slide of rocks ; then up an irregular amphi 
theater, on points that form steps and give handhold, and then I reach a 
little shelf, along which I walk, and discover a vertical fissure, parallel to 
the face of the wall, and reaching to a higher shelf. This fissure is narrow, 
and I try to climb up to the bench, which is about forty feet overhead. I 
have a barometer on my back, which rather impedes my climbing. The 
walls of the fissure are of smooth limestone, offering neither foot nor hand 
hold. So I support myself by pressing my back against one wall and my 
knees against the other, and, in this way, lift my body, in a shuffling man 
ner, a few inches at a time, until I have, perhaps, made twenty five feet of 
the distance, when the crevice widens a little, and I cannot press my knees 
against the rocks in front with sufficient power to give me support in lifting 
my body, and I try to go back. This I cannot do without falling. So I 
struggle along sidewise, farther into the crevice, where it narrows. But by 
this time my muscles are exhausted, and I cannot climb longer; so I move 
still a little farther into the crevice, where it is so narrow and wedging that 
I can lie in it, and there I rest. Five or ten minutes of this relief, and up 
once more I go, and reach the bench above. On this I can walk for a 
quarter of a mile, till I come to a place where the wall is again broken 
down, so that I can climb up still farther, and in an hour I reach the sum 
mit. I hang up my barometer, to give it a few minutes time to settle, and 
