each time Perrault fell into the water, he had to light a fire to dry and warm himself. Once,
the sledge fell through the ice, with Dave and Buck, and they were covered in ice by the time
Perrault and Francois pulled them out of the river. Again, a fire was needed to save them.
Another time, Spitz and the dogs in front fell through the ice - Buck and Dave and Francois
at the sledge had to pull backwards. That day they travelled only four hundred metres.