The sled's runners are finally freed from the frozen snow, but the dogs still have to struggle with all their might in order to pull the sled even a short distance, and when the path becomes uneven, the sled overturns and spills most of the load, which, as we know, has been improperly loaded. Once the dogs are freed from the excess weight, they flee without heeding the calls of their "new masters." Buck and his comrades look upon these people with a great deal of suspicion.Later, when Mercedes refuses to cast away as much of her possessions as the onlookers advocated, Charles and Hal decide to buy six extra dogs, now making a total of fourteen dogs pulling the sled. The extra dogs, of course, require more food proportionately, and this factor increases the load which the dogs must pull. As the days go by, London says, it becomes apparent, even to Buck, that
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