d to become
missionaries. In his leisure hours he collected natural history
specimens, which he sent home, studied the poisonous tsetse fly and the
deadly fever, and was always searching for remedies. He was never idle.

His new place of abode had one serious defect--it was badly situated as
regarded rain and irrigation, and therefore Livingstone decided to move
again forty miles farther to the north, to Kolobeng, where for the third
time he built himself a house. As before, his black friends were much
disturbed at his departure, and when they could not induce him to
remain, the whole tribe packed up their belongings and went with him.
Then clearing, building, and planting went on again. At Kolobeng
Livingstone had a fixed abode for quite five years, but this was his
longest and last sojourn in one place, for his after-life was a
continuous pilgrimage without rest and repose. As usual, he gained the
confidence and friendship of the natives.

The worst trouble was the vicinity of the Boers. They accused him of
providing Sechele's tribe with weapons and exciting them against the
Boers. They threatened to kill all black missionaries who ventured into
the Transvaal, and devised plans for getting rid of Livingstone. Under
such conditions his work could not be successful, and he longed to go
farther north to countries where he could labour in peace without
hindrance from white men who were nominally Christians, but treated the
natives like beasts. Besides, hard times and famine now came to
Kolobeng. The crops suffered from severe drought, and even the river
failed. The natives went off to hunt, and the women gathered locusts for
food. No child came to school, and the church was empty on Sunday.

Then Livingstone resolved to move still farther northwards, and on June
1, 1849, the party set out. An Englishman named Oswell, who was
Livingstone's friend, went with them and bore all the expenses of the
journey. He was a man of means, and so several waggons, eighty oxen,
twenty horses, and twenty-five servants were provided.

After two months' march they came to the shore of Lake Ngami, which was
now seen for the first time by Europeans. The king, Lechulatebe, proved
less friendly than was expected. When he heard that Livingstone intended
to continue his journey northwards to the great chief Sebituane, he
feared that the latter would obtain firearms from the white men and
would come down slaying and pillaging to the country roun