Hal cried "Whoa! whoa!" but they gave no heed.

He tripped and was pulled off his feet.

The capsized sled ground over him, and the dogs dashed on up the street, adding to the gayety of Skaguay as they scattered the remainder of the outfit along its chief thoroughfare.
Kind-hearted citizens caught the dogs and gathered up the scattered belongings.

Also, they gave advice.

Half the load and twice the dogs, if they ever expected to reach Dawson, was what was said.