Brown's Park we grounded on these sand-bars, making it necessary for
us to get out into the water, pushing and pulling on the boats until
deeper water was reached. Sometimes the deep water came when least
expected, the sand-bars having a disconcerting way of dropping off
abruptly on the downstream side. Jimmy stepped off the edge of one of
these hidden ledges while working with a boat and was for some time in
no condition to appreciate our ill-concealed mirth.

Often we would be passing along on perfectly smooth water, when
suddenly a turmoil would rise all about us as though a geyser had
broken out below the surface. If we happened to be directly over it,
the boat would be rocked back and forth for a while; then all would be
peaceful again. This was most often caused by the ledges of sand,
anywhere from three to ten feet high breaking down or falling forward
as their bases were undermined. In a single night a bar of this kind
will work upstream for a distance of several feet; then the sand will
be carried down with the current to lodge again in some quiet pool,
and again be carried on as before. This action gives rise to long
lines of regular waves or swells extending for some distance down the
stream. These are usually referred to as sand-waves. These waves
increase in size in high water; and the monotonous thump, thump of the
boat's bottom upon them is anything but pleasant, especially if one is
trying to make fast time.

So, with something new at every turn, we pulled lazily through Brown's
Park, shooting at ducks and geese when we came near them, snapping our
cameras when a picture presented itself, and observing the animal life
along the stream.

We stopped at one hay-ranch close to the Utah-Colorado line and