mail which the convoy had sent me.

He returned to the office a little later and glanced at the several
reviews which I had just recieved.

"So," he said. "You take these."

He skimmed through, as he spoke, the last number of the _Zeitschrift
der Gesellschaft fur Erdkunde in Berlin_.

"Yes," I answered. "These gentlemen are kind enough to interest
themselves in my works on the geology of the Wadi Mia and the high
Igharghar."

"That may be useful to me," he murmured, continuing to turn over the
leaves.

"It's at your service."

"Thanks. I am afraid I have nothing to offer you in exchange, except
Pliny, perhaps. And still--you know what he said of Igharghar,
according to King Juba. However, come help me put my traps in place
and you will see if anything appeals to you."

I accepted without further urging.

We commenced by unearthing various meteorological and astronomical
instruments--the thermometers of Baudin, Salleron, Fastre, an aneroid,
a Fortin barometer, chronometers, a sextant, an astronomical spyglass,
a compass glass.... In short, what Duveyrier calls the material that