Osa and Mats set out for their old home on the heath. When they arrived they were shocked to find the little cabin in flames. They went to the parsonage and there they learned that a railroad workman had seen their father at Malmberget, far up in Lapland. He had been working in a mine and possibly was still there. When the clergyman heard that the children wanted to go in search of their father he brought forth a map and showed them how far it was to Malmberget and tried to dissuade them from making the journey, but the children insisted that they must find their father. He had left home believing something that was not true. They must find him and tell him that it was all a mistake.
They did not want to spend their little savings buying railway tickets, therefore they decided to go all the way on foot, which they never regretted, as it proved to be a remarkably beautiful journey.
Before they were out of Småland, they stopped at a farm house to buy food. The housewife was a kind, motherly soul who took an interest in the children. She asked them who they were and where they came from, and they told her their story. "Dear, dear! Dear, dear!" she interpolated time and again when they were speaking. Later she petted the children and stuffed them with all kinds of goodies, for which she would not accept a penny. When they rose to thank her and go, the woman asked them to stop at her brother's farm in the next township. Of course the children were delighted.
"Give him my greetings and tell him what has happened to you," said the peasant woman.
This the children did and were well treated. From every farm after that it was always: "If you happen to go in such and such a direction, stop there or there and tell them what has happened to you."
In every farm house to which they were sent there was always a consumptive. So Osa and Mats went through the country unconsciously teaching the people how to combat that dreadful disease.
Long, long ago, when the black plague was ravaging the country, 'twas said that a boy and a girl were seen wandering from house to house. The boy carried a rake, and if he stopped and raked in front of a house, it meant that there many should die, but not all; for the rake has coarse teeth and does not take everything with it. The girl carried a broom, and if she came along and swept before a door, it meant that all who lived within must die; for the broom is an implement that makes a clean sweep.
It seems quite remarkable that in our time two children should wander through the land because of a cruel sickness. But these children did not frighten people with the rake and the broom. They said rather: "We will not content ourselves with merely raking the yard and sweeping the floors, we will use mop and brush, water and soap. We will keep clean inside and outside of the door and we ourselves will be clean in both mind and body. In this way we will conquer the sickness."
One day, while still in Lapland, Akka took the boy to Malmberget, where they discovered little Mats lying unconscious at the mouth of the pit. He and Osa had arrived there a short time before. That morning he had been roaming about, hoping to come across his father. He had ventured too near the shaft and been hurt by flying rocks after the setting off of a blast.
Thumbietot ran to the edge of the shaft and called down to the miners that a little boy was injured.