In some scenes aboard the raft, the background on one side of the raft moves faster than the background on the other side of the raft, and sometimes the background doesn't move at all.
When Matt climbs on board the raft, it doesn't seem to be moving, yet when Utter sees the raft through his spyglass it is moving swiftly along the river.
When Tuttle lays down after getting sick, the bandage on the toe is missing.
After Matt bandages Tuttle's toe and they walk toward Hannah for some food, the shadow of someone's head is seen on a box at the lower right corner of the screen.
Jack Elam's French accent comes and goes.