The British turned their attention to the Makgadikgadi Pan, a large salt pan to the north of the then British protectorate.

No salt pan this time, but a flat, circular floor of dry mud, hard and entirely free from the surrounding sand.

Your defending the salt pans against the imperious waves of the raging sea from the NE.

[Illustration: Salt pans in Yun-nan (From Garnier.)

Sellers demonstrated by finding that many of the graves were lined at the bottom with fragments of these large clay " salt pans."

We remained a fortnight longer, during which the same phenomenon continued, each day the salt pans and coppers being further off from the beach.

"We shall find plenty of it among the rocks if we get some sunshine," said Willy; "and if not, we must dig some salt pans.