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 time next morning in sight of the Soa. This was the third of the Great Salt Lakes. Near it we met some Dutch hunters, on a chase for elephants and ostriches.

Thanks to the dry weather, we were able to cross several spruits that ran in and out the various creeks, a proceeding that after much rain would have been quite impracticable. Having chosen a good position for our camping out, we resolved to stay there until the 27th, as we ascertained that there was excellent drinking-water to be found by digging holes in the bed of the Momotsetlani, a river that flowed through the adjacent wood. According to my habit when halting for any longer time than usual, I made several excursions, in the course of which I shot five ducks, two guinea-fowl, that were in unusually large numbers, and a brown stork, the first example of the kind I had seen.

The Soa is the largest saltpan in the Great Lake basin, extending westward beyond Lake N’gami, and connected with the Limpopo system by the Shaneng; like the Karri-Karri and Tsitane, it is quite shallow, being only four feet deep; it is grey in colour, and is rarely completely full, indeed a great part of it is quite dry. In order to ascertain the exact relations between the basin and Lake N’gami and the Zooga, it would be necessary to take a series of observations for an entire year; during the rainy season, however, travelling is extremely difficult and the climate is very unhealthy, so that it is easy to account for the task not having been accomplished hitherto. The general uniformity of level of the great central South African basin causes the Zooga at some times to flow east and at others to flow west. When the