Sinclair's Luck by Percy F. Westerman — Read

FOR the next three weeks Colin and Desmond had little to complain of. Apart from their anxiety to communicate with their friends, they really had a rather pleasant holiday. They were well-fed, housed, and cared for, and up to a certain point allowed liberty of action.

Their greatest difficulty was their inability to understand the Makoh'lenga language. Although it resembled the Zulu dialects in the way in which the guttural "clicks" occurred, in almost every other word there was nothing else in common with the native tongues spoken in that part of the Dark Continent.