Green peacefully completed its rather violent
descent. In the upper end we usually found rough water in the canyons
and quiet water in the open sections. Here at least were two canyons,
varying from 300 feet at their beginning to 1300 in depth, both
without a rapid. The first of these was Labyrinth Canyon, so named
from its elaborately winding course as well as its wonderful intricate
system of dry, lateral canyons, and its reproduction in rock of
architectural forms, castles, arches, and grottos; even animals and
people were represented in every varying form.

Our Sunday camp was beside what might be called a serpentine curve or
series of loops in the river. This was at the centre of what is known
as the Double Bow Knot, three rounded loops, very symmetrical in form,
with an almost circular formation of flat-topped rock, a mile or more
in diameter in the centre of each loop. A narrow neck of rock connects
these formations to the main mesa, all being on the same level, about
700 feet above the river. The upper half of the rock walls was sheer;
below was a steep boulder-covered slope. The centre formation is the
largest and most perfect, being nearly two miles in diameter and
almost round; so much so, that a very few minutes are necessary to
climb over the narrow neck which connects this formation to the mesa.
It took 45 minutes of hard rowing on a good current to take us around
this one loop. The neck is being rapidly eroded, two hundred feet
having disappeared from the top, and at some distant day will
doubtless disappear entirely, making a short cut for the river, and
will leave a rounded island of rock standing seven hundred feet above
the river. A bird's-eye view of the three loops would compare well in
shape to the little mechanical contrivance known as the "eye" in the
combination of "hook and eye." All women and many men will get a clear
idea the shape of the Double Bow Knot from this comparison.

We recorded an interesting experiment with the thermometer at this
camp, showing a great variety of temperatures, unbelievable almost to
one who knows nothing of conditions in these semi-arid plateaus. A
little ice had formed the night before. Under a clear sky the next day
at noon, our thermometer recorded 54 degrees in the shade, but ran up
to 102 degrees in the sun. At the same time the water in the river was
52 degrees Far. The effect of being deluged in ice-cold waves, then
running into deep sunless canyons with