form jacket he withdrew a wallet, glanced at its contents, and passed it to the captain.
"Your papers, Captain—the papers of transfer from Wady Halfa to Gibraltar. Money, too. I suppose we'll have to take that, also, to make appearances perfect—robbery following assault on the wharves."
Woodhouse pocketed the military papers in the wallet and laid it down, the money untouched. The two white aids of Doctor Koch, who were standing by the folding doors, eyed the leather folder hungrily. Koch, meanwhile, had stripped off the jacket from the Englishman and was rolling up the right sleeve of his shirt. That done, he brought down from the top of the glass instrument case a wooden rack containing several test tubes, stoppled with cotton. One glass tube he lifted out of the rack and squinted at its clouded contents against the light.
"A very handy little thing—very handy." Koch was talking to himself as much as to Woodhouse. "A sweet little product of the Niam Niam country down in Belgian Kongo. Natives think no more of it than they would
