As there was no hope of the Boers allowing the peaceable instruction of the natives at Kolobeng, I at once resolved to save my family from exposure to this unhealthy region by sending them to England, and to return alone, with a view to exploring the country in search of a healthy district that might prove a centre of civilization, and open up the interior by a path to either the east or west coast. This resolution led me down to the Cape in April, 1852, being the first time during eleven years that I had visited the scenes of civilization. Our route to Cape Town led us to pass through the centre of the colony during the twentieth month of a Caffre war; and if those who periodically pay enormous sums for these inglorious affairs wish to know how our little unprotected party could quietly travel through the heart of the colony to the capital with as little sense or sign of danger as if we had been in England, they must engage a "'Times' Special Correspondent" for the next outbreak to explain where the money goes, and who have been benefited by the blood and treasure expended. Having placed my family on board a homeward-bound ship, and promised to rejoin them in two years, we parted, for, as it subsequently proved, nearly five years. The Directors of the London Missionary Society signified their cordial approval of my project by leaving the matter entirely to my own discretion; and I have much pleasure in acknowledging my obligations to the gentlemen composing that body for always acting in an enlightened spirit, and with as much liberality as their constitution would allow. I have the like pleasure in confessing my thankfulness to the Astronomer Royal at the Cape, Thomas Maclear, Esq., for enabling me to recall the little astronomical knowledge which constant manual labor and the engrossing nature of missionary duties had effaced from my memory, and in adding much that I did not know before. The promise he made on parting, that he would examine and correct all my observations, had more effect in making me persevere in overcoming the difficulties of an unassisted solitary observer than any thing else; so whatever credit may be attached to the geographical positions laid down in my route must be attributed to the voluntary aid of the excellent and laborious astronomer of the Cape observatory. Having given the reader as rapid a sketch as possible of events which attracted notice between 1840 and 1852, I now proceed to narrate the incidents of the last and longest journey of all, performed in 1852-6. Chapter 5.