Read it through once

Toward daylight she returned. She had been unsuccessful, as she succeeded in untying only one of the knots. All took their turns regularly, and each one succeeded in untying only one knot each time. But when the youngest went, she commenced the work as soon as she reached the lodge; although it had always been occupied, still the Indians never could see any one. For ten nights now, the smoke had not ascended, but filled the lodge and drove them out. This last night they were all driven out, and the young woman carried off the head.