Ever ready to serve his old friend Livingstone, he took care that they should be at my elbow so long as I required them to help me amidst the pile of MSS.

and maps.

Their knowledge of the countries they travelled in is most remarkable, and from constantly aiding their master by putting questions to the natives respecting the course of rivers, &c., I found them actual geographers of no mean attainments.

In one instance, when in doubt concerning a particular watershed, to my surprise Susi returned a few hours afterwards with a plan of the whole system of rivers in the region under examination, and I found his sketch tally well with the Doctor's map.

Known to me previously for years on the Zambesi and Shire it was a pleasure to have them with me for four months.