river, make a canal, and irrigate the adjacent lands.  This suggestion was immediately adopted, and soon the whole tribe was on the move to the Kolobeng, a stream about forty miles distant.  The experiment succeeded admirably during the first year.  The Bakwains made the canal and dam in exchange for my labor in assisting to build a square house for their chief.  They also built their own school under my superintendence.  Our house at the River Kolobeng, which gave a name to the settlement, was the third which I had reared with my own hands.  A native smith taught me to weld iron; and having improved by scraps of information in that line from Mr. Moffat, and also in carpentering and gardening, I was becoming handy at almost any trade, besides doctoring and preaching; and as my wife could make candles, soap, and clothes, we came nearly up to what may be considered as indispensable in the accomplishments of a missionary family in Central Africa, namely, the husband to be a jack-of-all-trades without doors, and the wife a maid-of-all-work within.  But in our second year again no rain fell.  In the third the same extraordinary drought followed.  Indeed, not ten inches of water fell during these two years, and the Kolobeng ran dry; so many fish were killed that the hyaenas from the whole country round collected to the feast, and were unable to finish the putrid masses.  A large old alligator, which had never been known to commit any depredations, was found left high and dry in the mud among the victims.  The fourth year was equally unpropitious, the fall of rain being insufficient to bring the grain to maturity.  Nothing could be more trying.  We dug down in the bed of the river deeper and deeper as the water receded, striving to get a little to keep the fruit-trees alive for better times, but in vain.  Needles lying out of doors for months did not rust; and a mixture of sulphuric acid and water, used in a galvanic battery, parted with all its water to the air, instead of imbibing more from it, as it would have done in England.  The leaves of indigenous trees were all drooping, soft, and shriveled, though not dead; and those of the mimosae were closed at midday, the same as they are at night.  In the midst of this dreary drought, it was wonderful to see those tiny creatures, the ants, running about with their accustomed vivacity.  I put the bulb of a thermometer three inches under the soil, in the sun, at midday, and found the mercury to stand at 132 Deg. to 134 Deg.; and if certain kinds of beetles were placed on the surface, they ran about a few seconds and expired.  But this broiling heat only augmented the activity of the long-legged black ants:  they never tire; their organs of motion seem endowed with the same power as is ascribed by physiologists to the muscles of the human heart, by which that part of the frame never becomes fatigued, and which may be imparted to all our bodily organs in that higher sphere to which we fondly hope to rise.  Where do these